# SDR AALA201909189023

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 16, 2019
- Submitted: September 18, 2019
- Operation: Air carrier
- Aircraft: N393AN
- Make and model: Boeing 767323
- Aircraft serial: 29430
- Aircraft time: 81,757 hours, 13,336 cycles
- System (JASC): [2421 · AC Generator-Alternator](https://openairdocs.org/jasc/2421)
- Part: Filter
- Part number: 30014361
- Condition: Faulty
- Location: Apu
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA201909189023

## Discrepancy

AIRCRAFT WAS GROUNDED: FLIGHT DIVERTED TO LHR ON ACCOUNT OF APU FAULT AND RIGHT ENGINE GENERATOR ON PLACARD. EMERGENCY DECLARED. MAINTENANCE REPLACED RT IDG IAW AMM 24-11-01. OPS AND LEAK CHECK OK. CHECKED AND PERFORMED APU CONTROL UNIT BITE TEST IAW AMM 49-61-05 AND FOUND GEN FILTER FAULT. REMOVED AND REPLACED GENERATOR SCAVENGE FILTER IAW AMM 49-27-03. RAN APU AND FOUND OK. (SEE SDR # AALA201909179008)

---
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.