# SDR CALA2026080418258

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 31, 2026
- Submitted: August 5, 2026
- Operation: Air carrier
- Aircraft: [N644UA](https://openairdocs.org/aircraft/N644UA), registered now
- Make and model: Boeing 767322
- Aircraft serial: 25094
- Aircraft time: 133,189 hours, 20,407 cycles
- System (JASC): [5330 · Fuselage Main, Plate/Skin](https://openairdocs.org/jasc/5330)
- Part: Skin
- Part number: 148T3110
- Condition: Punctured
- Location: Zone 200
- 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/CALA2026080418258

## Discrepancy

PUNCTURE IN LT SKIN ABOVE HORIZONTAL STAB APPROX BS 1728, WL  300.    LENGTH OF PUNCTURE IS 1.25 INCHES, AND DAMAGED  OUTER CHORD OF BULKHEAD 1725.5. MORE DETAILED LOCATION IS STA 1727.7 TO STA 1728.8, LOCATED 2 INCHES ABOVE S-4 AT THE LOWEST POINT, AND 2.75 INCHES ABOVE S-4 AT THE HIGHEST POINT. REF SRM 51-80-03, 53-80-08, 53-80-01 ACTUAL DAMAGE LOCATION IS BETWEEN S-4-L AND S-5-L, DAMAGE BEGINS 2.25" FROM BS 1725.5 AND ENDS AT 4.75" FROM SAME BS.  5" IN WIDTH . ACCOMPLISHED EXTERNAL DETAILED VISUAL INSP IAW AVO 17977 STEP 2, NO FURTHER DAMAGE THAN BEEN PREVIOUSLY STATED EXTERNALY OBSERVED. ON ACCOMPLISHMENT OF INTERNAL DETAILED VISUAL INSPECTION PER STEP 4 OF AVO 17977, FOUND CHORD STRAP AFT OF BULKHEAD CASTING APPEARS TO BE DEFLECTED. AFT SIDE OF CASTING. AVO17977 STEP 1.  DAMAGE TO STRINGER 4L FASTENER CENTERLINE IS 4.3",  DAMAGE TO STRINGER 5L FASTENER CENTERLINE IS 2.0", DAMAGE TO AFT BUTT SPLICE FASTENER CENTERLINE IS .5" AVO17977 STEP 6 - REMOVED FASTENERS COMMON TO BUTT SPLICE 5 ROWS ABOVE & BELOW OF DAMAGE LOCATION ON AFT SIDE. CONFIRMED STECRA 5380-01455 WAS C/W IN AVO17977 WORK STEPS. OK TO RETURN TO SERVICE

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