Part 29 flight deck
Part 29 certification-basis support for transport rotorcraft flight-deck equipment
This support aligns flight-deck equipment to the Part 29 paragraphs that apply on a transport-category rotorcraft and checks the package against each one. A certification or engineering lead runs it while preparing a submittal or answering a finding. It covers the crew interface, the display behavior the pilots rely on in a multi-crew rotorcraft, the DO-160G environmental qualification against the transport rotorcraft environment, and the installation assumptions the equipment carries. You receive a paragraph-level standards map, a gap list keyed to the missing evidence, and a closure order weighted toward the highest-risk findings.
When this review is needed
- Flight-deck equipment is entering a Part 29 submittal on a transport rotorcraft and the basis is more demanding than a normal-category one.
- An authority finding asks how the crew interface performs in a multi-crew rotorcraft cockpit.
- Equipment carried from a Part 27 rotorcraft needs its assumptions re-checked against the transport-category basis.
- The environmental qualification has to be confirmed against the transport rotorcraft vibration and temperature environment.
The problem
A transport-category rotorcraft raises the bar over a normal-category one: the failure-condition classifications are more stringent, the crew environment is multi-crew, and the installation demands more evidence. Equipment developed against a lighter basis carries crew-interface rationale, display-behavior evidence, and environmental reports that were never held to the Part 29 level, and the shortfall surfaces when a finding presses on a function the transport basis treats as more critical.
What gets reviewed
- Part 29 paragraphs applicable to the flight-deck equipment and its crew-facing functions
- Crew-interface assumptions checked against the multi-crew transport rotorcraft cockpit
- Display behavior across normal, degraded, and failure modes tied back to its substantiation
- DO-160G qualification mapped to the transport rotorcraft vibration and temperature environment
- DO-178C life-cycle data checked against the more stringent transport failure classifications
- Installation assumptions confirmed valid for the transport rotorcraft
What gets validated
- Each Part 29 paragraph in the basis links to a named document rather than an assertion
- Software assurance level matches the transport rotorcraft failure-condition classification, which is often higher
- Crew-interface evidence addresses the multi-crew cockpit rather than a single-pilot assumption
- DO-160G categories cover the transport rotorcraft environment
- Installation assumptions carried from a lighter basis are shown to hold on the transport rotorcraft
Evidence normally required
- The certification basis and issue papers for the transport rotorcraft installation
- Crew-interface analysis and the multi-crew operating context
- DO-160G qualification reports, including any carried from a lighter basis
- DO-178C life-cycle data covering the equipment's flight-deck software
- The system safety assessment classifying the equipment's failure conditions
Common discrepancies
- A software assurance level set for a normal-category function that is short of the transport classification
- Crew-interface evidence built on a single-pilot assumption the transport rotorcraft does not match
- Environmental qualification carried from a lighter basis that never saw the transport profile
- An installation assumption from a Part 27 program that no longer holds under Part 29
What is at stake
Evidence built to a normal-category standard can fall short of the Part 29 failure-condition classifications, leaving software assurance and crew-interface findings open at the transport level. A crew-interface argument that did not account for a multi-crew cockpit, or environmental qualification below the transport rotorcraft profile, forces analysis or test rework once the program has committed to a schedule.
Move from findings to resolution
Identify gaps against the means of compliance.
How the work runs
Reset the basis
Identify the Part 29 paragraphs and the failure classifications that now apply.
Grade the carryover
Separate evidence that meets the transport level from evidence held only to a lighter basis.
Re-check the assumptions
Confirm crew-interface, environmental, and installation evidence holds under Part 29.
Sequence the work
Order the open findings so the elevated-classification items are cleared first.
What the buyer receives
- A Part 29 standards map linking each paragraph to its evidence and status
- A gap list identifying the assurance, interface, or environmental evidence still owed
- A closure sequence that prioritizes the elevated-classification findings
Who uses the output
- Certification leads answering Part 29 findings on the flight-deck equipment
- Engineering leads scoping the re-assurance or re-analysis the transport basis demands
- Compliance managers watching which Part 29 findings stay open as the submittal date nears
How the work fits into the transaction or program
The mapping runs when equipment moves onto a transport-category rotorcraft and the basis shifts to Part 29. It separates evidence that carries over from evidence that was held only to a lighter standard, so the team knows what has to be re-assured or re-tested to the transport level before the finding response.
Start with a single asset
Confirm requirements trace through verification.
Jurisdiction-specific considerations
Part 29 under the FAA and CS-29 under EASA align on most flight-deck expectations, but crew-interface and software substantiation can be argued differently, so the map notes where a package accepted by one authority needs restatement for the other.
Regulatory limits
The mapping shows how the equipment's evidence meets the Part 29 basis and where it falls short. It does not issue a compliance finding, approve the equipment or its installation, or make an airworthiness determination, all of which rest with the authority.
What this review does not cover
- Re-running environmental qualification against the transport profile
- Producing new crew-interface or software-assurance evidence
- Issuing any compliance finding or approval on the equipment
Specific to this review
- Part 29 failure-condition classifications run more stringent than Part 27, so a software assurance level set for a normal-category function is a common shortfall on a transport rotorcraft.
- A multi-crew transport cockpit changes the crew-interface argument, and evidence built on a single-pilot assumption fails at the transport level even when the hardware is unchanged.
- Equipment migrated up from a Part 27 program carries installation assumptions that the transport rotorcraft may not support, making those the first thing to re-check.
Sources
U.S. Government (eCFR). Type certificates, STCs (Subpart E), TSO authorizations (Subpart O), PMA (Subpart K), and export airworthiness approvals (Subpart L).
Federal Aviation Administration. FAA type certification process, certification basis establishment, and compliance findings.
SAE International. Development assurance process at aircraft and system level, including requirements capture and validation.
Frequently asked questions
The equipment is certified on a Part 27 rotorcraft. What changes under Part 29?
Part 29 applies to transport-category rotorcraft and generally imposes more stringent failure-condition classifications and a multi-crew environment. Software assurance levels, crew-interface evidence, and environmental qualification often have to be raised to that level rather than carried across from the normal-category basis.
Relevant glossary terms
Related pages
Where this fits
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