# SDR ASAA2022022037501

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 20, 2022
- Submitted: February 23, 2022
- Operation: Air carrier
- Aircraft: [N585AS](https://openairdocs.org/aircraft/N585AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35683
- Aircraft time: 52,881 hours, 15,776 cycles
- System (JASC): [2610 · Detection System](https://openairdocs.org/jasc/2610)
- Part: Unknown
- Part number: UNKNOWN
- Condition: Unknown
- Location: Unknown
- Stage of operation: IN
- How discovered: C
- Nature of condition: L
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2022022037501

## Discrepancy

#1 ENGINE "A" FIRE LOOP WILL NOT TEST. GROUNDED - YES. BITE CHECK OF THE ENGINE/APU FIRE DETECTION UNIT RESULTED IN A LOWER FAN LOOP A FAULT. PERFORMED A GVI OF THE LOWER FAN ELEMENT AND FOUND LOOSE TERMINAL LUGS. SECURED TERMINAL LUGS PER B737-800 AMM 26-11-01/401. PERFORMED AN OP-TEST OF THE ENGINE FIRE DETECTION SYSTEM PER AMM 26-11-00-710-801. ALL TESTS NORMAL.

---
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.