# SDR ASMF2019042304

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 26, 2019
- Submitted: April 23, 2019
- Operation: Air carrier
- Aircraft: N858AM
- Make and model: Boeing 737852
- Aircraft serial: 39958
- Aircraft time: 59,668 hours, 21,291 cycles
- Engine: Cfmint CFM567B262
- System (JASC): [7532 · Compressor Bleed Valve](https://openairdocs.org/jasc/7532)
- Part: Bleed Valve
- Part number: 32913903
- Part serial: GRTT0476
- Condition: Failed
- Location: Left
- Part time: 33,972 hours, 13,193 cycles
- Stage of operation: IN
- How discovered: V
- Nature of condition: K
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASMF2019042304

## Discrepancy

DURING TRANSIT CHECK, A FUEL LEAK WAS DETECTED IN THE LEFT ENGINE. MAINTENANCE PERSONNEL PERFORMED REVISION DETECTING A FUEL LEAK AT TBV MAST DRAIN; SO THE TBV WAS REPLACED IAW AMM 75-23-01. THE LH ENGINE WAS TESTED AND IT WAS DETECTED OTHER FUEL LEAK AT HPTACC VALVE; SO THE HPTACC VALVE WAS REPLACED IAW AMM 75-21-01 AND FUEL HEAT EXCHANGER WAS REPLACED IAW AMM 79-21-02, TESTED CORRECT.

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