# SDR KCSA202302101004

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 10, 2023
- Submitted: February 11, 2023
- Operation: Air carrier
- Aircraft: [N715CK](https://openairdocs.org/aircraft/N715CK), registered now
- Make and model: Boeing 747-4B5F
- Registry model: [Boeing 747-4B5F](https://openairdocs.org/model/boeing-747-4b5f) (OpenAirDocs)
- Aircraft serial: 32809
- Aircraft time: 75,595 hours, 13,446 cycles
- System (JASC): [5310 · Fuselage Main, Structure](https://openairdocs.org/jasc/5310)
- Part: Shear Tie
- Condition: Cracked
- Location: Unknown
- Stage of operation: IN
- How discovered: E
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/KCSA202302101004

## Discrepancy

MANDATORY: PERFORM EO- EO 5312-22-01 (ENGINEERING ORDER) REV. 00  AD 2021-17-06(G), RB 747-53A2904 - STA 1000 FRONT SPAR SHEAR TIE AND INTERCOSTAL LUG FITTING INSPECTION AND REPAIR. NOTE: SDR IDENTIFIED FOR BS 1000 LBL 33.99 ADJACENT TO CENTER WING TANK UPPER CHORD ON SHEAR TIE CRACKED AT FASTENER HOLE 3 LOCATIONS 1/4" LONG

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