# SDR 9703656740

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 19, 1997
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N640US
- Make and model: Boeing 747251F
- Aircraft serial: 23888
- System (JASC): [5411 · Nacelle/Pylon, Frame/Spar/Rib](https://openairdocs.org/jasc/5411)
- Part: Frame
- Condition: Cracked
- Location: Bs 238
- Stage of operation: IN
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/9703656740

## Discrepancy

DURING PERIODIC CHECK, FOUND SIX INCH CRACK IN THE NR 4 PYLON ON RIGHT SIDE OF FRAME AT NAC STA 238 TEN INCHES UP FROM LOWER END.   REPAIRED PER SRM 51-10-1.

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