# SDR AMTA200300997

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 2, 2003
- Submitted: August 25, 2003
- Operation: Air carrier
- Aircraft: N552TZ
- Make and model: Boeing 757-33N
- Registry model: [Boeing 757-33N](https://openairdocs.org/model/boeing-757-33n) (OpenAirDocs)
- Aircraft serial: 32586
- Engine: Rroyce RB211535E4
- System (JASC): [7260 · Turbine Engine Accessory Drive](https://openairdocs.org/jasc/7260)
- Part: Seal
- Condition: Leaking
- Location: Lt Engine
- Stage of operation: CR
- How discovered: O
- Nature of condition: K
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AMTA200300997

## Discrepancy

LEFT ENGINE OIL QUANTITY DECREASING APPROX 1 QUART PER 15 MIN IN CRUISE ARRIVED SFO 9 QUARTS TOTAL.  REPLACED TOWER SHAFT UPPER SEALS PER MM 72-62-01-04.  LEAK CHECK NR 1 ENGINE, OPS CHECK NORMAL.  (M)

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