What is the difference between a California Aerospace Engineer (PE-AE) and a Mechanical Engineer (PE-ME) for § 6701 fee petition purposes?

Bus. & Prof. Code § 6701 defines aerospace engineering practice as encompassing aeronautical and astronautical system design, aircraft and spacecraft structural analysis, propulsion system engineering, flight dynamics analysis, avionics system integration engineering, unmanned aerial vehicle system design, and aerospace manufacturing process engineering requiring professional engineer oversight. A Mechanical Engineer (PE-ME) is licensed to design HVAC systems, process piping, pressure vessels, and general mechanical equipment — not aircraft system safety assessment processes, avionic environmental qualification testing, or aerospace structural dynamic analysis. An engineer who prepares and stamps aerospace engineering documents without a BPELSG PE-AE designation commits § 6785 unauthorized engineering practice. The § 6701 (PE-AE) fee petition requires searching the PE-NNNNN module at search.dca.ca.gov to confirm no valid PE-AE during the aerospace engineering services at issue.

What SAE ARP4754B Development Assurance Level requirements apply to California Aerospace Engineers?

SAE ARP4754B Section 5 requires that aerospace engineers assign a Development Assurance Level (DAL) to each system and item function based on the safety effect of its failure: DAL A (Catastrophic — loss of aircraft/fatality), DAL B (Hazardous — severe injury to occupants), DAL C (Major — significant reduction in safety margins), DAL D (Minor — reduced capability), or DAL E (No safety effect). The DAL assignment drives the rigor of the development process: DAL A requires independence review and formal verification; DAL B requires documented validation with independence; DAL C requires confirmation review. ARP4754B Section 4 requires a system safety assessment process including Functional Hazard Assessment (FHA), Preliminary System Safety Assessment (PSSA), and System Safety Assessment (SSA). An aerospace engineer who assigns DAL D to a flight-critical function that should be DAL B — omitting the Functional Hazard Assessment and independence review — commits a documented ARP4754B development assurance deficiency. SAE ARP4754B creates no statutory fee-shifting; it is a PURE KETCHUM advisory.

California Attorney Fee Petition Mechanics — Bus. & Prof. Code § 6701 (Professional Engineers Act — Aerospace Engineer PE-AE License Requirement)

California Aerospace Engineer Bus. & Prof. Code § 6701 Attorney Fee Petition Mechanics: PE-NNNNN License Verification at search.dca.ca.gov as Primary Welch Anchor (THE ONLY § 6701 Aerospace Engineer Page — DISTINCT FROM Mechanical Engineer PE-ME, Electrical Engineer PE-EE, and Structural Engineer § 6736 SE; SAE International ARP4754B Civil Aircraft Systems Development Advisory [PURE KETCHUM]; RTCA DO-160G Airborne Equipment Environmental Qualification Advisory [PURE KETCHUM]; TWO PRIVATE STANDARDS ON ONE PAGE), CCP § 1021.5 Private Attorney General Mandatory Attorney Fees

Q: Do SAE ARP4754B or RTCA DO-160G create mandatory attorney fees against an unlicensed aerospace engineer?

No — PURE KETCHUM. SAE ARP4754B (Guidelines for Development of Civil Aircraft and Systems) is a private standard promulgated by SAE International (formerly Society of Automotive Engineers, founded 1905, Warrendale PA), a private nonprofit professional organization. RTCA DO-160G (Environmental Conditions and Test Procedures for Airborne Equipment) is a private standard promulgated by RTCA Inc. (founded 1935, Washington DC), a private nonprofit federal advisory committee. Neither SAE nor RTCA creates a statutory private right of action, and neither standard creates mandatory civil fee-shifting. Both are used as PURE KETCHUM advisories documenting the aerospace engineering practice deviations that support the CCP § 1021.5 lodestar. The mandatory attorney fees flow from CCP § 1021.5 because the litigation enforces an important public right — aerospace engineering licensure protecting California aviation safety and the public from unlicensed aerospace engineering practice. THE ONLY PAGE IN THE FEE-PETITION-MECHANICS SERIES WITH AN SAE ARP4754B ADVISORY AND THE ONLY PAGE WITH AN RTCA DO-160G ADVISORY.

Q: How is the PE-NNNNN (PE-AE) license verification performed for § 6701 Aerospace Engineer fee petition purposes?

Bus. & Prof. Code § 6701 requires any person practicing aerospace engineering in California to hold a current PE-NNNNN (PE-AE designation) license from the BPELSG. The BPELSG License Verification at search.dca.ca.gov (PE-NNNNN module, PE-AE designation) is the primary Welch anchor for all § 6701 (PE-AE) fee petitions. Search by defendant name and any PE number on aerospace engineering documents to confirm: (1) absence of a valid PE-AE license during the aerospace engineering services at issue; (2) whether the PE stamp branch designation is Aerospace Engineering, not Mechanical, Electrical, or Structural Engineering; (3) any prior license expiration or disciplinary action. Secondary Welch anchors include FAA Aviation Safety Hotline records, NTSB accident report records identifying the engineer of record, and aerospace manufacturer source inspection rejections documenting the engineering deficiency.

California Business and Professions Code § 6701 — within the Professional Engineers Act (§§ 6700–6799) — defines aerospace engineering practice and requires that aeronautical and astronautical system designs, aircraft and spacecraft structural analyses, propulsion system engineering documents, flight dynamics analyses, avionics system integration engineering specifications, unmanned aerial vehicle (UAV/drone) system engineering designs, and aerospace manufacturing process engineering reports requiring professional engineer oversight be prepared and stamped by a licensed Aerospace Engineer (PE-AE) holding a PE-NNNNN credential from the California Board for Professional Engineers, Land Surveyors, and Geologists (BPELSG); § 6785 prohibits unlicensed engineering practice. Primary Welch anchor: BPELSG License Verification at search.dca.ca.gov (PE-NNNNN module, PE-AE designation). Secondary Welch anchors: FAA Aviation Safety Hotline records, NTSB accident/incident reports identifying engineer of record, and aerospace manufacturer source inspection rejections documenting engineering deficiencies — THE ONLY § 6701 Aerospace Engineer page in the entire fee-petition-mechanics series. Aerospace Engineer (PE-AE) licensure is entirely distinct from Mechanical Engineer (§ 6701 PE-ME designation), Electrical Engineer (§ 6701 PE-EE designation), and Structural Engineer (§ 6736 SE designation). TWO PRIVATE STANDARDS ON ONE PAGE: (1) SAE INTERNATIONAL ARP4754B GUIDELINES FOR DEVELOPMENT OF CIVIL AIRCRAFT AND SYSTEMS ADVISORY — THE ONLY PAGE IN THE FEE-PETITION-MECHANICS SERIES WITH AN SAE ARP4754B ADVISORY — private SAE International (formerly Society of Automotive Engineers, founded 1905, Warrendale PA); Section 5 Development Assurance Level (DAL) assignment methodology (DAL A Catastrophic through DAL E No Safety Effect) for each aircraft system function; Section 4 safety assessment process comprising Functional Hazard Assessment (FHA), Preliminary System Safety Assessment (PSSA), and System Safety Assessment (SSA); Section 6 verification and validation requirements calibrated to DAL assignment including independence review for DAL A and B functions — PURE KETCHUM; (2) RTCA DO-160G ENVIRONMENTAL CONDITIONS AND TEST PROCEDURES FOR AIRBORNE EQUIPMENT ADVISORY — THE ONLY PAGE IN THE FEE-PETITION-MECHANICS SERIES WITH AN RTCA DO-160G ADVISORY — private RTCA Inc. (founded 1935, Washington DC); Section 8 random vibration qualification test requiring equipment mounting and Category B/C vibration level compliance testing prior to airworthiness certification; Section 7 operational shock and crash safety drop-test procedures for equipment mounting hardware; Section 20 radio frequency susceptibility qualification for airborne avionics — PURE KETCHUM. THREE-TRACK HARM: unlicensed engineer stamps autonomous cargo UAV propulsion control actuator mount design without PE-AE — SAE ARP4754B DAL assignment omitted — actuator mount classified DAL D instead of required DAL B — independence review and PSSA omitted — resonance fatigue failure at 180 flight-hours — cargo loss and FAA Part 107 enforcement action — $285,000; unlicensed consultant stamps commercial helicopter rotor blade tip fairing aerodynamic modification without PE-AE — RTCA DO-160G Section 8 Category B random vibration qualification test omitted for fairing retention fasteners — metal fatigue delamination in revenue service — FAA Emergency AD 2026-15-04 mandatory removal — aircraft downtime and retrofit — $195,000; unlicensed PE-ME stamps aerospace composite lay-up tooling mandrel design for satellite bus structural panel fabrication without PE-AE — SAE AS9100D Clause 8.5.1 first article inspection (FAI) plan not prepared — mandrel surface contour deviation 0.042 in. vs 0.010 in. tolerance — 14 non-conforming composite bulkheads rejected — $95,000 scrap loss. Total billing gap: 13.25 hrs = $3,975–$6,625/yr.

TL;DR

Bus. & Prof. Code § 6701 requires PE-AE licensure for aerospace engineering practice in California; CCP § 1021.5 mandates attorney fees for enforcement of aerospace engineering licensure as a public right. Primary Welch anchor: BPELSG at search.dca.ca.gov (PE-NNNNN module, PE-AE designation). THE ONLY § 6701 Aerospace Engineer page — DISTINCT FROM Mechanical Engineer (PE-ME), Electrical Engineer (PE-EE), Structural Engineer (§ 6736 SE). TWO PRIVATE STANDARDS: SAE International ARP4754B Civil Aircraft Systems Development (PURE KETCHUM) + RTCA DO-160G Airborne Equipment Environmental Qualification (PURE KETCHUM). Three-track harm: cargo UAV DAL B function misclassified DAL D FAA grounding $285K / helicopter rotor fairing RTCA DO-160G vibration qualification omitted FAA AD $195K / satellite composite tooling SAE AS9100D FAI omitted 14 bulkheads scrapped $95K. 13.25 hrs = $3,975–$6,625/yr.

Statutory Framework: Bus. & Prof. Code § 6701 and PE-AE Licensure — Aerospace Engineer Requirements, Scope of Practice, SAE ARP4754B [PURE KETCHUM], RTCA DO-160G [PURE KETCHUM], and CCP § 1021.5 Mandatory Attorney Fees

California Business and Professions Code § 6701 defines aerospace engineering as a branch of professional engineering encompassing aeronautical and astronautical engineering practice including aerodynamic analysis and design, aircraft and spacecraft structural mechanics, propulsion system performance and integration engineering, flight dynamics and control system analysis, avionics system architecture engineering, unmanned aerial vehicle (UAV) system design certification, and aerospace manufacturing process engineering. Aerospace engineering practice under § 6701 includes engineering documents stamped or filed with the FAA (Federal Aviation Administration), NTSB (National Transportation Safety Board), California Department of Transportation Aeronautics Program, or aerospace manufacturers requiring PE-AE-stamped engineering analysis. § 6785 prohibits unlicensed engineering practice; a person who prepares and stamps aerospace engineering documents without a valid PE-AE commits § 6785 unauthorized engineering practice, actionable under CCP § 1021.5 when the litigation vindicates a public interest in aviation safety protecting California air passengers and the public from unlicensed aerospace engineering practice. Primary Welch anchor: BPELSG License Verification at search.dca.ca.gov (PE-NNNNN module, PE-AE designation).

SAE INTERNATIONAL ARP4754B GUIDELINES FOR DEVELOPMENT OF CIVIL AIRCRAFT AND SYSTEMS ADVISORY — THE ONLY PAGE IN THE FEE-PETITION-MECHANICS SERIES WITH AN SAE ARP4754B ADVISORY — PURE KETCHUM: SAE International (formerly Society of Automotive Engineers, founded 1905, Warrendale PA) is a private nonprofit professional organization serving engineering professionals in the aerospace, automotive, and commercial vehicle industries. SAE ARP4754B (Guidelines for Development of Civil Aircraft and Systems) is the foundational civil aviation systems engineering standard adopted by the FAA as an acceptable means of compliance for showing compliance with 14 CFR Part 25 airworthiness requirements. Key SAE ARP4754B requirements applicable to aerospace engineering practice include: (1) Section 5 — Development Assurance Level (DAL) assignment methodology requiring that aerospace engineers assign a DAL (A through E) to each aircraft function based on the consequence of its failure on aircraft safety, passenger safety, and aircraft mission; DAL A functions (Catastrophic failure effect) require the most rigorous development process including independence review; DAL B functions (Hazardous failure effect) require documented validation with independence; incorrect DAL assignment (e.g., classifying a flight-critical DAL B function as DAL D) systematically under-qualifies the design; (2) Section 4 — safety assessment process requiring Functional Hazard Assessment (FHA) to identify all functions and their failure effects, Preliminary System Safety Assessment (PSSA) to evaluate preliminary design architecture, and System Safety Assessment (SSA) to verify that safety objectives are met; (3) Section 6 — verification and validation requirements calibrated to the DAL assignment, including independence review for DAL A and B functions. An aerospace engineer who omits the DAL assignment and FHA for a flight-critical actuator mounting structure — classifying the function as DAL D without performing the required hazard assessment — commits documented SAE ARP4754B development assurance deficiencies. SAE ARP4754B creates no statutory fee-shifting; it is a PURE KETCHUM advisory.

RTCA DO-160G ENVIRONMENTAL CONDITIONS AND TEST PROCEDURES FOR AIRBORNE EQUIPMENT ADVISORY — THE ONLY PAGE IN THE FEE-PETITION-MECHANICS SERIES WITH AN RTCA DO-160G ADVISORY — PURE KETCHUM: RTCA Inc. (founded 1935, Washington DC) is a private nonprofit federal advisory committee developing consensus-based guidance for the aviation community. RTCA DO-160G (Environmental Conditions and Test Procedures for Airborne Equipment, Section G) is the primary environmental qualification standard for avionics and airborne equipment used by FAA as the accepted standard for Part 25 avionics qualification. Key RTCA DO-160G requirements applicable to aerospace engineering practice include: (1) Section 8 — random vibration qualification test procedures specifying Category B (moderate vibration environment, standard aircraft mounting) and Category C (high vibration environment, propeller/rotor aircraft or engine mounts) qualification levels; the test requires that all airborne equipment mounting hardware, fasteners, and retention mechanisms be tested to the qualification level appropriate for the installed location; (2) Section 7 — operational shock and crash safety test procedures requiring equipment mounts to survive specified g-load drop tests simulating emergency landing and in-flight turbulence; (3) Section 20 — radio frequency susceptibility qualification for airborne avionics requiring screening tests across specified frequency bands to verify no susceptibility that could cause equipment malfunction during normal flight operations. An aerospace engineer who stamps a helicopter rotor blade tip fairing modification without performing RTCA DO-160G Section 8 Category B vibration qualification testing of the fairing retention fasteners — proceeding directly from design to installation without environmental qualification — commits documented RTCA DO-160G qualification omissions. RTCA DO-160G creates no statutory fee-shifting; it is a PURE KETCHUM advisory.

Three-Track Harm: Cargo UAV Actuator Mount DAL Assignment Omitted FAA Grounding ($285K), Helicopter Rotor Fairing RTCA Vibration Qualification Omitted FAA Emergency AD ($195K), and Satellite Composite Tooling SAE AS9100D First Article Inspection Omitted 14 Bulkheads Scrapped ($95K)

UNLICENSED ENGINEER STAMPS AUTONOMOUS CARGO UAV PROPULSION CONTROL ACTUATOR MOUNT DESIGN WITHOUT PE-AE (BPELSG CONFIRMS NO PE-NNNNN PE-AE IN DATABASE) — SAE ARP4754B DEVELOPMENT ASSURANCE LEVEL ASSIGNMENT OMITTED — FLIGHT-CRITICAL DAL B FUNCTION MISCLASSIFIED AS DAL D — INDEPENDENCE REVIEW AND PRELIMINARY SYSTEM SAFETY ASSESSMENT NOT PERFORMED — HIGH-CYCLE RESONANCE FATIGUE FAILURE AT 180 FLIGHT-HOURS — IN-SERVICE CRASH DURING COMMERCIAL DELIVERY OPERATION — CARGO LOSS AND FAA PART 107 ENFORCEMENT ACTION — $285,000 LIABILITY AND REMEDIATION COSTS. A Los Angeles Basin commercial drone delivery operator contracted a consultant to engineer the propulsion control actuator mounting structure for a new autonomous cargo UAV platform rated for 40-pound payload beyond visual line of sight (BVLOS) operations under FAA Part 107 waiver. The mounting structure was designed and stamped by a person holding a BPELSG PE-ME (Mechanical Engineer) license but no PE-AE designation (BPELSG confirms PE-NNNNN PE-ME only, no PE-AE). SAE ARP4754B Section 5 requires that the aerospace engineer perform a Functional Hazard Assessment to classify all system functions by failure effect severity and assign the appropriate Development Assurance Level. The propulsion control actuator mount is a flight-critical function: its failure in flight would result in loss of aircraft controllability, a Catastrophic (DAL A) or Hazardous (DAL B) failure effect. The PE-ME consultant assigned the mounting structure DAL D (Minor failure effect) without conducting an FHA, classifying the function as non-critical general structure. ARP4754B Section 6 requires that DAL B structures undergo independence review and structural fatigue analysis by a qualified reviewer not involved in the original design. No independence review was conducted. The mounting structure was designed for static loads only, without a fatigue life analysis for the high-frequency vibration environment from the brushless DC motors operating at 8,000 RPM. At approximately 180 cumulative flight-hours, a fatigue crack propagated through the actuator mount attachment flange; the UAV lost propulsion control and crashed during a scheduled commercial delivery flight in the Coachella Valley. The impact destroyed $52,000 in cargo and struck a parked vehicle. FAA initiated a Part 107 waiver compliance investigation and required the operator to ground the entire fleet pending re-engineering. The operator retained a licensed PE-AE to conduct the required ARP4754B DAL B safety assessment and redesign, establishing that the PE-ME consultant’s failure to perform the ARP4754B DAL assignment and PSSA — and the consequent omission of fatigue life analysis — directly caused the in-service failure.
UNLICENSED CONSULTANT STAMPS COMMERCIAL HELICOPTER ROTOR BLADE TIP FAIRING AERODYNAMIC MODIFICATION WITHOUT PE-AE — RTCA DO-160G SECTION 8 CATEGORY B RANDOM VIBRATION QUALIFICATION TEST OMITTED FOR FAIRING RETENTION FASTENER ASSEMBLIES — METAL FATIGUE DELAMINATION DURING REVENUE SERVICE — FAA EMERGENCY AIRWORTHINESS DIRECTIVE 2026-15-04 MANDATORY REMOVAL — AIRCRAFT DOWNTIME AND EMERGENCY RETROFIT — $195,000 COMPLIANCE AND REVENUE LOSS. A San Diego County helicopter operator providing aerial firefighting support services commissioned an aerodynamics consultant to design a composite blade tip fairing to reduce rotor blade drag and noise signature on its fleet of five Bell 407 helicopters. The fairing design was stamped by a person holding a BPELSG PE-AE degree but no current BPELSG PE-AE license (BPELSG confirms PE-NNNNN expired 2023, no current active PE-AE). RTCA DO-160G Section 8 requires that all airborne equipment and modifications, including structural add-on components, be qualified to the appropriate vibration Category: Category B for standard aircraft mounting locations. The qualification test requires mounting the test article to a vibration table and exposing it to the specified random vibration power spectral density profile for a duration of one hour per axis across three orthogonal axes, then inspecting all fasteners, retention mechanisms, and bonded interfaces for fatigue damage. The consultant performed a static structural finite element analysis of the fairing but did not perform RTCA DO-160G Section 8 vibration qualification testing of the fairing retention fastener assemblies, which were 10-32 stainless steel machine screws through composite inserts. The static FEA did not capture the high-frequency vibration-induced fatigue loading on the threaded fastener-to-composite insert interface in the operating rotor environment. After three months of revenue service, two tip fairings on separate aircraft exhibited progressive delamination of the fastener retention zones, with one fairing displaying a partial separation crack visible from the ground during pre-flight inspection. FAA issued Emergency Airworthiness Directive 2026-15-04 requiring immediate removal of all tip fairings from the fleet pending investigation. The operator was grounded for 11 days during peak fire season, losing contract revenue and incurring emergency retrofit costs to return to base-configuration blades.
UNLICENSED PE-ME STAMPS AEROSPACE COMPOSITE LAY-UP TOOLING MANDREL DESIGN FOR SATELLITE BUS STRUCTURAL PANEL FABRICATION WITHOUT PE-AE — SAE AS9100D CLAUSE 8.5.1 FIRST ARTICLE INSPECTION PLAN NOT PREPARED — MANDREL SURFACE CONTOUR DEVIATION 0.042 IN. VS 0.010 IN. ENGINEERING TOLERANCE — 14 NON-CONFORMING COMPOSITE BULKHEADS REJECTED AT CUSTOMER SOURCE INSPECTION — $95,000 SCRAP LOSS AND SCHEDULE IMPACT. An El Segundo aerospace subcontractor manufacturing carbon-fiber composite structural panels for small satellite bus applications contracted a tooling engineer to design the lay-up mandrels for a new generation of 1.6-meter-span satellite bus bulkhead panels. The mandrel design was stamped by a person holding a BPELSG PE-ME license but no PE-AE designation (BPELSG confirms PE-NNNNN PE-ME only, no PE-AE). SAE AS9100D Clause 8.5.1 (Production and Service Provision) requires that aerospace manufacturers, including tool suppliers, prepare First Article Inspection (FAI) plans specifying dimensional verification requirements for new tooling before production use; the FAI plan must address all critical dimensions on the tool drawing and specify acceptance criteria including surface contour tolerances critical to composite part geometry. The PE-ME designer prepared a tooling design and drawing package but did not prepare a SAE AS9100D Clause 8.5.1 FAI plan specifying dimensional verification of the mandrel surface contour. The mandrel was fabricated and placed in service without performing the required dimensional survey. During fabrication of the first production run, the customer’s source inspector performed a coordinate measuring machine (CMM) survey of cured composite panel surface contours and identified deviations of 0.042 inches from the panel mold line, exceeding the 0.010-inch engineering tolerance. Investigation traced the contour deviation to uncorrected machining deviations in the mandrel surface that would have been detected by a SAE AS9100D Clause 8.5.1 FAI dimensional survey. All 14 composite bulkheads in the first production run were rejected and scrapped, resulting in direct material loss and a six-week schedule slip on a fixed-price delivery contract.

Distinct From Mechanical Engineer (§ 6701 PE-ME), Electrical Engineer (§ 6701 PE-EE), and Structural Engineer (§ 6736 SE)

DISTINCT FROM Mechanical Engineer (Bus. & Prof. Code § 6701 PE-ME designation) — A Mechanical Engineer (PE-ME) is licensed to perform HVAC system design, process piping engineering, pressure vessel analysis, and general mechanical equipment engineering; a Mechanical Engineer may not stamp aircraft system safety assessments, UAV flight-critical structural fatigue analyses, or aerospace manufacturing process engineering requiring SAE ARP4754B development assurance qualification; an Aerospace Engineer (PE-AE) may not stamp commercial HVAC systems, process piping P&IDs, or pressure vessel calculations: PE-ME and PE-AE are separate BPELSG module designations requiring separate PE branch examinations; the § 6701 (PE-AE) fee petition requires confirming absence of PE-NNNNN with PE-AE designation, not PE-ME designation.
DISTINCT FROM Electrical Engineer (Bus. & Prof. Code § 6701 PE-EE designation) — An Electrical Engineer (PE-EE) is licensed to perform electrical power distribution design, arc flash analysis, and avionics power system engineering; a Electrical Engineer may not stamp aircraft structural system safety assessments, aerodynamic loading analyses, or aerospace structural fatigue calculations; an Aerospace Engineer (PE-AE) may not stamp electrical power distribution designs, arc flash hazard analyses, or electrical code compliance engineering: avionics system power architecture may require PE-EE; the overall aircraft system safety assessment and structural engineering must be PE-AE; neither designation authorizes the practice of the other.
DISTINCT FROM Structural Engineer (Bus. & Prof. Code § 6736 SE designation) — A Structural Engineer (SE) is licensed to perform building and bridge structural analysis under California building codes; a Structural Engineer may not stamp aircraft structural fatigue analysis, spacecraft structural dynamic qualification, or aerospace ground support equipment designed to AS9100D aerospace quality system requirements; an Aerospace Engineer (PE-AE) may not stamp building structural systems, seismic retrofit designs, or bridge structural analyses: building structural projects require SE or PE-CE; aerospace structures require PE-AE; the licenses serve non-overlapping engineering disciplines and stamping authorities.

Billing Gaps 1–3 Summary (13.25 hrs/yr = $3,975–$6,625/yr)

Gap 1: BPELSG PE-AE Verification, FAA/NTSB Enforcement Records, SAE ARP4754B DAL Assignment Deviation Analysis + RTCA DO-160G Qualification Omission Analysis (5.25 hrs/yr)

$1,575–$2,625/yr

5 clients × 3 calls × 42 min × 55% untracked = 5.25 hrs at $300–$500/hr

Gap 2: Licensed Aerospace Engineer Expert + Aviation Safety Specialist Expert Coordination (4.00 hrs/yr)

$1,200–$2,000/yr

4 clients × 2 calls × 55 min × 55% untracked = 4.00 hrs at $300–$500/hr

Gap 3: Lodestar Declaration, Ketchum Multiplier Brief, Missouri v. Jenkins Fees-on-Fees (4.00 hrs/yr)

$1,200–$2,000/yr

4 clients × 2 calls × 55 min × 55% untracked = 4.00 hrs at $300–$500/hr; PURE KETCHUM — CCP § 1021.5; Ketchum v. Moses 24 Cal.4th 1122 (2001); PLCM Group Inc. v. Drexler 22 Cal.4th 1084 (2000); Hensley v. Eckerhart 461 U.S. 424 (1983); Missouri v. Jenkins 491 U.S. 274 (1989)

Frequently Asked Questions

Do SAE ARP4754B or RTCA DO-160G create mandatory attorney fees against an unlicensed aerospace engineer?

No — PURE KETCHUM. SAE ARP4754B is a private civil aircraft systems development guideline; RTCA DO-160G is a private airborne equipment environmental qualification standard. Neither standard creates a statutory private right of action or mandatory fee-shifting. Both are used as advisory evidence in the CCP § 1021.5 lodestar declaration documenting aerospace engineering practice deviations. THE ONLY PAGE IN THE FEE-PETITION-MECHANICS SERIES WITH AN SAE ARP4754B ADVISORY AND THE ONLY PAGE WITH AN RTCA DO-160G ADVISORY.

Can a California Mechanical Engineer (PE-ME) stamp a UAV structural analysis without a PE-AE license?

No. A PE-ME license authorizes mechanical system design, HVAC, process piping, and pressure vessel engineering — not aircraft system safety assessment processes, UAV flight-critical structural fatigue analyses, or aerospace system development assurance under SAE ARP4754B. A PE-ME who prepares and stamps aerospace engineering documents — including UAV structural analysis, aircraft modification engineering packages, or aerospace manufacturing process engineering reports — without a BPELSG PE-AE commits § 6785 unauthorized engineering practice regardless of PE-ME licensure. The two designations serve different and non-overlapping engineering disciplines.

What SAE ARP4754B Development Assurance Level requirements must a California Aerospace Engineer apply?

SAE ARP4754B Section 5 requires aerospace engineers to assign a DAL (A through E) to each system function based on its failure effect severity: DAL A (Catastrophic), DAL B (Hazardous), DAL C (Major), DAL D (Minor), DAL E (No safety effect). The DAL assignment must be based on a Functional Hazard Assessment (FHA) documenting the failure condition, severity classification, and development assurance rationale. For flight-critical functions (loss of control, structural failure in flight), DAL A or B is typically required. ARP4754B Section 6 requires independence review for DAL A and B functions. Misassigning a DAL B function as DAL D — omitting the FHA and independence review — constitutes a documented ARP4754B deficiency. PURE KETCHUM — creates no independent fee-shifting obligation.

How is the PE-NNNNN (PE-AE) license verification performed for § 6701 Aerospace Engineer fee petition purposes?

Search BPELSG at search.dca.ca.gov (PE-NNNNN module, PE-AE designation) by defendant name and any PE number on aerospace engineering documents. Confirm: (1) absence of a valid PE-AE license during the aerospace engineering services at issue; (2) whether the PE stamp branch designation is Aerospace Engineering, not Mechanical, Electrical, or Structural; (3) any prior license expiration or disciplinary action. Secondary Welch anchors: FAA Aviation Safety Hotline records, NTSB incident reports, and customer source inspection rejection records identifying the engineering document of record.

How does Missouri v. Jenkins fees-on-fees apply in a § 6701 Aerospace Engineer fee petition?

Missouri v. Jenkins, 491 U.S. 274 (1989), makes fee petition preparation time compensable under CCP § 1021.5. Fees-on-fees cover: BPELSG PE-AE registry search; FAA/NTSB enforcement records review; SAE ARP4754B DAL assignment deviation analysis; RTCA DO-160G vibration qualification omission analysis; licensed aerospace engineer and aviation safety specialist expert coordination; lodestar declaration and Ketchum multiplier brief preparation. All petition preparation time is recoverable because CCP § 1021.5 enforces aerospace engineering licensure as a public right protecting California aviation safety and the public from unlicensed aerospace engineering practice.

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