# SDR DHL2006750508

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 13, 2006
- Submitted: April 8, 2006
- Operation: Air carrier
- Aircraft: [N750DH](https://openairdocs.org/aircraft/N750DH), registered now
- Make and model: Boeing 727-2M7
- Registry model: [Boeing 727-2M7](https://openairdocs.org/model/boeing-727-2m7) (OpenAirDocs)
- Aircraft serial: 21951
- Aircraft time: 37,992 hours
- System (JASC): [5310 · Fuselage Main, Structure](https://openairdocs.org/jasc/5310)
- Part: Torque Box
- Condition: Cracked
- Location: Bs 1303
- 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/DHL2006750508

## Discrepancy

TORQUE BOX FIN REAR SPAR CHORD LWR LT SIDE APPEARS TO BE CRACKED PASSED STOP DRILL HOLE STA BS 1303 LBL 22.  C/W HFEC ON BS 1303 FRAME WEB IAW B727 NDTM PT6 51-00-00 FIG 23.  FOUND 1/4" CRACK EXTENDING FROM PREVIOUS STOP DRILL HOLE.  TOTAL CRACK LENGTH 1".  NO OTHER INDICATIONS NOTED.  STOP DRILLED IAW B727 SRM 51-10-1 AND BOEING SERVICE BULLETIN 727-53-0094.  STOP DRILLED CRACK ON FRAME WEB AT LBL22".  ACCOMPLISHED NDT INSP VERIFYING CRACK CONTAINMENT PER NDT MAN CHAPTER 51-00-00 PART 6 FIG 23.  NO DEFECTS PER COTNEY AEROSPACE EO NR EAAB22-1 W/8110-3 DATED:4/7/06 AND SB 727-53-0094REV3.  THIS REPAIR IS CATEGORY B AND REQUIRES RE-INSPECTION AT REGULAR INTERVALS NOT TO EXCEED 2400 FLIGHT CYCLES.

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