# SDR U5QA202603180168

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 18, 2026
- Submitted: March 26, 2026
- Operation: Air carrier
- Aircraft: [N350VJ](https://openairdocs.org/aircraft/N350VJ), registered now
- Make and model: Bombdr BD1001A10
- Aircraft serial: 20569
- Aircraft time: 8,459 hours, 4,269 cycles
- System (JASC): [4940 · APU Start/Ignition System](https://openairdocs.org/jasc/4940)
- Part: Apu
- Condition: Faulted
- Stage of operation: TX
- How discovered: O
- Nature of condition: B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/U5QA202603180168

## Discrepancy

APU FAILED TO START ON PAST 2 APPROACHES. CYAN APU SHUTDOWN CAS POSTED. ON SUBSEQUENT ATTEMPT AFTER LANDING THERE WAS A VERY STRONG SMELL OF FUEL IN THE CABIN.  MX C/A: INSPECTED APU INLET AND APU IGNITER, APU INLET WAS CLEAR AND APU IGNITER WAS WITHIN LIMITS BUT SHOWED SIGNS OF WEAR. PERFORMED 4 SATISFACTORY STARTS OVER TWO HOURS WITH NO DEFECTS OR SMELLS NOTED. RECOMMEND CHECKING OIL PRESSURE SWITCH WIRING. NO DEFECTS NOTED AT THIS TIME. WORK PERFORMED IN REF TO HONEYWELL GTC56-150BD LMM 49-40-33. BOMBARDIER CL350 AMM 49-00-00.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.