# SDR ASAA2015020410557

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 4, 2015
- Submitted: February 10, 2015
- Operation: Air carrier
- Aircraft: [N557AS](https://openairdocs.org/aircraft/N557AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35176
- Aircraft time: 33,284 hours, 9,814 cycles
- Engine: Cfmint CFM567B27
- System (JASC): [7250 · Turbine Section](https://openairdocs.org/jasc/7250)
- Part: Flange
- Part number: 3350704010
- Condition: Cracked
- Location: Nr 1 Engine
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2015020410557

## Discrepancy

NR 1 ENGING REAR FLANGE ASSY HAS TWO CRACKS COMING FROM FASTNERS AT 1 O'CLOCK & 3 O'CLOCK.  ACFT GROUNDED.  REMOVED PRIMARY NOZZLE ASSY, PRIMARY PLUG ASSY R & R REAR FLANGE ASSY AND FLAME ARRESTOR GASKET.  REINSTALLED PRIMARY NOZZLE ASSY AND PRIMARY PLUG ASSY ON NR 1 ENG REF MM 781-11-01-000-802-F00, 78-11-02-000-803-F00 AND 72-56-00-00-802-F00.  PERFORMED TEST 3A IDLE POWER LEAK CHECK IAW AMM TASK 71-00-00-700-801-F00.  NO LEAKS NOTED.

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