# SDR ASAA2018060824948

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 1, 2017
- Submitted: June 8, 2018
- Operation: Air carrier
- Aircraft: [N594AS](https://openairdocs.org/aircraft/N594AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35191
- Aircraft time: 36,884 hours, 11,114 cycles
- Engine: Cfmint CFM567B27
- System (JASC): [7230 · Turbine Engine Compressor Section](https://openairdocs.org/jasc/7230)
- Part: Pin
- Part number: CFM567B273
- Part serial: 896205
- Condition: Migrated
- Location: Nr 1 Engine
- Part time: 36,842 hours, 11,219 cycles
- Stage of operation: IN
- How discovered: B
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2018060824948

## Discrepancy

WHILE ACCOMPLISHING TC SBCFM56-7B-72-0986-1 FOR THE NR 1 ENGINE,  FOUND THE SLAB HEADED ANTI-ROTATION PINS AT THE 3:00 AND 9:00 POSITIONS OF THE STAGE 3 TO HAVE ROTATED MORE THAN ZERO BUT LESS THAN 45 DEGREES.  ACFT GROUNDED.  THE NR 1 ENGINE WAS REPLACED.

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