# SDR 2007UALA01141

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 13, 2007
- Submitted: April 17, 2007
- Operation: Air carrier
- Aircraft: N173UA
- Make and model: Boeing 747422
- Aircraft serial: 24380
- Aircraft time: 66,099 hours, 7,547 cycles
- Engine: Pwa PW4056
- System (JASC): [5330 · Fuselage Main, Plate/Skin](https://openairdocs.org/jasc/5330)
- Part: Skin
- Condition: Damaged
- Location: Bs 1803-1810
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2007UALA01141

## Discrepancy

EXTERNAL FUSELAGE SKIN AT AFT PIT DOOR CUTOUT FWD SIDE STA 1803 - 1810 IS DAMAGED.   [SUP 05-16-07]  RECHECKED EXISTING DOUBLER ON EXT FUSE SKIN AT AFT PIT DOOR CUTOUT FWD SIDE STA 1803 - 1810. REMOVED EXISTING REPAIR DOUBLERS. TRIM OUT PER FRR  UAL-744-0266. HFEC PER NTM P6 51- 00-00. NO CRACKS NOTED. REINSTALLED DOUBLERS.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain, except the copies of manufacturers’ service documents, which belong to their rights holders.