# SDR DHL2006762521

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 28, 2006
- Submitted: July 24, 2006
- Operation: Air carrier
- Aircraft: [N762AT](https://openairdocs.org/aircraft/N762AT), registered now
- Make and model: Boeing 727-2B7
- Registry model: [Boeing 727-2B7](https://openairdocs.org/model/boeing-727-2b7) (OpenAirDocs)
- Aircraft serial: 22162
- Aircraft time: 62,000 hours, 34,469 cycles
- System (JASC): [5310 · Fuselage Main, Structure](https://openairdocs.org/jasc/5310)
- Part: Structure
- Condition: Cracked
- Location: Aft Airstair
- 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/DHL2006762521

## Discrepancy

AT LT SIDE OF AFT AIRSTAIR WELL 2 CRACKS EMANATING FROM LOWER LIGHTENING HOLE ON TORQUE BOX AT BS 1237.  REMOVED EXISTING DOUBLER AT LT SIDE AFT AIRSTAR WEB BS 1237 IAW B727 SRM 51-30-2.  FAB NEW DOUBLER FROM 7075T6 .040 PO NR 9003137 DIM.3" BY 3" IAW B727 SRM 51-40-2 FIG 1 AND SRM 53-10-2 FIG 6 FOR TOP POS OF LIGHTENING HOLE.  STOP DRILLED CRACK AT BOTTOM OF LIGHTENING HOLE IAW B727 SRM 51-10-1.  PERFORMED NDT AROUND STOP HOLE, NO CRACKS NOTED IAW PART 6, 51-00-00 FIG 23.  FAB NEW REPAIR DOUBLER FOR CRACK AT BOTTOM OF LIGHTENING HOLE FROM 7075T6 .040 PO NR 9003137 APPROX 3 INCH BY 3" IAW B727 SRM 51-40-2 FIG 1.  TREATED AND PRIMED NEW REPAIR DOUBLERS AND WORKING AREA IAW B727 SRM 51-10-2.  INSTALLED REPAIR DOU

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