# SDR SWAA2022051708045

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 15, 2022
- Submitted: May 18, 2022
- Operation: Air carrier
- Aircraft: [N487WN](https://openairdocs.org/aircraft/N487WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 33854
- Aircraft time: 59,805 hours, 35,431 cycles
- Engine: Cfmint CFM567B20
- System (JASC): [7320 · Fuel Controlling System](https://openairdocs.org/jasc/7320)
- Part: Hydromech Unit
- Part number: 442653
- Part serial: BECW5133
- Condition: Stalled
- Location: #1 Engine
- Stage of operation: UK
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2022051708045

## Discrepancy

#1 ENGINE COMPRESSOR STALLED @ FL280. NO EXCEEDANCES NOTED; ALL ENGINE PARAMETERS NORMAL. #1 ENGINE STABALIZED AT LOWER ALTITUDE. / [01] PERFORMED FIM 71-05-00 TASK 805 TO STEP E6 AND AMM 71-00-00-210-801-FOO UP TO D 4 C.;[02] WORK VERIFIED.;[03] PERFORMED FILM 71-05-00 TASK 805. DURING INSPECTION FOUND FUEL OIL HEAT EXCHANGER LEAKING. REMOVED AND REPLACED PER AMM 79-21-10 PER ENGINEERING REQUEST REMOVED AND REPLACED HMU AND FUEL PUMP PER MT 773-21-10 OPS CKS AND LEAK CHECKS NORMAL. ACCOMPLISHED BORESCOPE OF # 1 ENGINE PER AMM 71-00-00-210-801-F00 REFERENCE TTG8Q00CGDMB;[04] WORK VERIFIED.

---
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.