# SDR ASAA2021062335153

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 23, 2021
- Submitted: June 26, 2021
- Operation: Air carrier
- Aircraft: [N596AS](https://openairdocs.org/aircraft/N596AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35688
- Aircraft time: 47,446 hours, 14,131 cycles
- Engine: Cfmint CFM567B27
- Engine time: 47,731 hours, 14,133 cycles
- System (JASC): [7250 · Turbine Section](https://openairdocs.org/jasc/7250)
- Part: Housing
- Condition: Damaged
- Location: Lt Eng Bearing
- Part time: 47,731 hours, 14,133 cycles
- 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/ASAA2021062335153

## Discrepancy

WHILE ACCOMPLISHING TSR710901 ON #1 ENGINE, FOUND 2 DAMAGE AREA ON ATTACH FLANGE AND 2 EA BAD BOLT LUGS FOR THE OIL INLET COVER ALL DAMAGED AREAS MARKED. GROUNDED - YES. REF ENGINE SHOP MANUAL FOR CFM56-7B SUBTASK 72-56-02-220-067 STEP I AND FIGURE 801 BOLT AREAS THAT ARE DAMAGED ON ATTACH FLANGE ARE OUT OF LIMITS. VERIFIED THREAD DAMAGE. ENGINE S/N # 894832 REMOVED REF T/C # 78471000. DEFECT TRANSFERRED TO EBU SHOP W/O # 1876634.

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