# SDR SWAA2023012583000

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 18, 2022
- Submitted: January 25, 2023
- Operation: Air carrier
- Aircraft: [N8522P](https://openairdocs.org/aircraft/N8522P), registered now
- Make and model: Boeing 737-8H4
- Registry model: [Boeing 737-8H4](https://openairdocs.org/model/boeing-737-8h4) (OpenAirDocs)
- Aircraft serial: 36922
- Aircraft time: 20,005 hours, 9,591 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Angle
- Condition: Corroded
- Location: Zn 100 Fus Lower
- 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/SWAA2023012583000

## Discrepancy

L/H TRANSITION ANGLE HAS MULTIPLE AREAS OR CORROSION BETWEEN BS 767 - 827<[01] REMOVED CORROSION ON L/H TRANSITION ANGLE AT LBL787+15; ORIGINAL THICKNESS .045IN; REMOVED .009?; REMAINING THICKNESS .036?. FOUND TO BE OUT OF LIMITS AS PER SRM 53-00-53-1A-2.;[02] REMOVED L/H TRANSITION ANGLE FROM; STA. 272+5 TO STA. 847 PER SRM 51-40-02 LOCATED AND DRILLED NEW  BAC1496-377 (CHANNEL; FORMED 7075T62-CLAD) PER SRM.53-00-53-2R-5 TREATED AND PRIME CHANNEL PER SRM. 51-20-02;[03] INSTALLED NEW SECTION OF TRANSITION ANGLE PER SRM SRM 53-00-53-2R-5.   PUSH TESTED NUT PLATES GOOD PER SRM 51-40-10.;[05] CORRECTIVE ACTION #2 WAS WRITTEN IN ERROR. INCORRECT STATION #.;[06] REMOVED L/H TRANSITION ANGLE FROM; STA. 727+5 TO STA. 847 PER SRM 51-40-02 LOCATED AND DRILLED NEW BAC1496-377  PER SRM.53-00-53-2R-5 TREATED AND PRIME CHANNEL PER SRM. 51-20-02. LOCATION OF THE TWO SPLICES PER SRM 53-00-53-2R-5 ARE AT STA 727C+10 AND STA 727I+10.;[07] REJECT: L/H TRANSITION ANGLE INSTALLED AT STA. 727+5- STA. 847; LBL 25 (REF. TTG8Q00GQWL5) IS NOT AN APPROVED FABRICATED PART.;[08] INSTALLED NEW SECTION OF TRANSITION ANGLE FROM STA. 727+5 TO STA. 847 PER SRM SRM 53-00-53-2R-5.;[09] C/W INSPECTION. SEE TSR 202300134 FOR AUTHORIZATION.

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