# SDR CALA2021012500074

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 22, 2021
- Submitted: January 25, 2021
- Operation: Air carrier
- Aircraft: [N781UA](https://openairdocs.org/aircraft/N781UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 26945
- Aircraft time: 96,170 hours, 16,782 cycles
- System (JASC): [5313 · Fuselage Main, Longeron/Stringer](https://openairdocs.org/jasc/5313)
- Part: Stringer
- Part number: 147W2360103
- Condition: Corroded
- Location: Zone 100
- 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/CALA2021012500074

## Discrepancy

LONGERON STRINGER 1937 TO 1958,STR L42 TO L42 CORROSION.  PART: LONGERON STRINGER, LOCATION: STA/FRAME 1937 TO 1958, STRINGER STR L42 TO L42.  BULK CARGO STA 1937 TO 1958 LT STR 42 ST RINGER REPAIRED, AS PER SRM 53-70-03-2R-1 REV 84 AND ECRA 5312-01 142 REV.  DETAIL REF ATT SWS RII BY TA369.

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