# SDR UPS99229646

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 8, 1999
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N921UP](https://openairdocs.org/aircraft/N921UP), registered now
- Make and model: Boeing 727180C
- Aircraft serial: 19874
- System (JASC): [5313 · Fuselage Main, Longeron/Stringer](https://openairdocs.org/jasc/5313)
- Part: Stringer
- Condition: Cracked
- Location: Bs 870
- 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/UPS99229646

## Discrepancy

INSPECTION TYPE:C, DURING ACCOMPLISHMENT OF RT 870 PARTIAL REPLACEMENT CRACK DISCOVERED AT FASTENER HOLE, LWR TANG, STR 13 AFT OF FITTING FLANGE.  RT 870 FITTING REPLACED IAW UPS EO B727-5310-3056-B APPD E.

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