# SDR KCSA2017102222

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 22, 2017
- Submitted: October 30, 2017
- Operation: Air carrier
- Aircraft: N976BA
- Make and model: Boeing 747-4B5
- Registry model: [Boeing 747-4B5](https://openairdocs.org/model/boeing-747-4b5) (OpenAirDocs)
- Aircraft serial: 25275
- Aircraft time: 88,314 hours, 15,196 cycles
- System (JASC): [5270 · Door Warning System](https://openairdocs.org/jasc/5270)
- Part: Pseu
- Part number: 856917
- Part serial: 443
- Condition: Faulty
- Location: Zone 800
- Part time: 3,065 hours, 568 cycles
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/KCSA2017102222

## Discrepancy

UPPER DECK DOOR FLIGHT LOCK. REPLACED PSEU PER AMM 32-09-03. GROUND TEST PASSED, OKAY FOR SERVICE.

---
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.