# SDR 97ZZZM86

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 30, 1995
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N53110
- Make and model: Boeing 747131
- Aircraft serial: 19676
- Engine: Pwa JT9D7AH
- System (JASC): [7261 · Turbine Engine Oil System](https://openairdocs.org/jasc/7261)
- Part: Breather
- Part number: 699602
- Condition: Oil Leak
- Location: Nr 4 Engine
- Stage of operation: CR
- Nature of condition: K, J
- Precautionary procedure: E
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/97ZZZM86

## Discrepancy

JFK - DURING CRUISE SHUT DOWN NR 4 ENGINE, S/N 4199, DUE TO DECREASING OIL QTY.  FOUND OIL LEAKING IN ENGINE CORE.  REPLACED NR 4 ENGINE AND ENGINE OPERATION CHECKED NORMAL.  INVESTIGATION REVEALED NR 1 AND NR 2 BEARING BREATHER MANIFOLD BELLOWS PROTECTIVE SHIELD, MFG P/N 640640, WORE A SMALL HOLE IN BEARING BREATHER MANIFOLD ASSEMBLY, MFG P/N 699602.  REPLACED BREATHER ASSEMBLY AND BREATHER MANIFOLD BELLOWS PROTECTIVE SHIELD.  ENGINE S/N 4199 RETURNED TO SERVICE.  (M)

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