# SDR UPS06446628

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 10, 2006
- Submitted: April 5, 2006
- Operation: Air carrier
- Aircraft: N681UP
- Make and model: Boeing 747121
- Aircraft serial: 19661
- Aircraft time: 106,939 hours, 27,146 cycles
- System (JASC): [5330 · Fuselage Main, Plate/Skin](https://openairdocs.org/jasc/5330)
- Part: Skin
- Condition: Cracked
- Location: Fuselage
- 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/UPS06446628

## Discrepancy

LT FLIGHT COMPT NR 3 WINDOW CUTOUT SKIN FOUND CRACKED AT AFT LOWER CORNER BOLT HOLE CUTOUT, CRACK LENGTH 3/4" APPROX.  FX LT BS 330 TO BS 340 STR 7L TO STR 10L WINDOW CUTOUT SKIN REPAIRED AS PER HX RS NR R53-11-35448 WITHOUT ZERO TIMING SUBSEQUENT INSPECTION ARE NECESSARY FOR CATEGORY B REPAIR SEE SRM 53-30-03 FIG 49 TABLE II FOR THE INSP REQUIREMENTS REF UPS EO# B747-5310-24045-A

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