# SDR UPS05444595

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 12, 2005
- Submitted: June 6, 2005
- Operation: Air carrier
- Aircraft: N677UP
- Make and model: Boeing 747123F
- Aircraft serial: 20391
- Aircraft time: 94,338 hours, 23,406 cycles
- System (JASC): [5312 · Fuselage Main, Bulkhead](https://openairdocs.org/jasc/5312)
- Part: Pressure Panel
- Condition: Cracked
- Location: Lt Mlg Ww
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UPS05444595

## Discrepancy

LT MLG WW APU BLEED AIR DUCT CUTOUT CRACKED AT 2 AND 7 O'CLOCK POSITION AT STA 1480 (CRACK LENGTH 2.5 IN).  LT MLG WW AREA BLEED AIR DUCT CUTOUT REPAIRED AS PER UPS EO B747-5310-3100-C AND DWG 144U2602.

---
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.