# SDR 99ZZZX1286

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 12, 1999
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: N79754
- Make and model: Boeing 727227
- Aircraft serial: 21363
- System (JASC): [7120 · Engine Mount Section](https://openairdocs.org/jasc/7120)
- Part: Bolt
- Part number: R1842353C
- Condition: Misdrilled
- Location: Forward Cone
- Stage of operation: IN
- Nature of condition: W
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/99ZZZX1286

## Discrepancy

CONE BOLT THROUGH-BOLT HOLE IS NOT CONCENTRIC AND HAS AN .010 INCH DEVIATION BETWEEN LEFT AND RIGHT SIDES, E.G., HOLE IS NOT STRAIGHT WHICH CONTRIBUTED TO THE THROUGH-BOLT BEING FOUND CRACKED UPON INSPECTION AFTER ENGINE REMOVAL FOR MAINTENANCE C-CHECK.

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