# SDR DHL2007741528

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 3, 2007
- Submitted: August 6, 2007
- Operation: Air carrier
- Aircraft: N741DH
- Make and model: Boeing 727-2Q9
- Registry model: [Boeing 727-2Q9](https://openairdocs.org/model/boeing-727-2q9) (OpenAirDocs)
- Aircraft serial: 21931
- Aircraft time: 48,407 hours, 38,367 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Channel
- Condition: Corroded
- Location: Bs 312
- 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/DHL2007741528

## Discrepancy

NOSE SECTION INTERIOR HORIZ WALKWAY BEAM LEFT SIDE WEB SUPPORT ANGLE ("C" CHANNEL) CORRODED AT BS 312.  REMOVED CORROSION, MATERIAL REMOVAL EXCEEDED LIMITS PER B727 SRM 53-10-1 FIG 1.  REMOVED "C" CHANNEL, FABRICATED NEW CHANNEL FROM AND 10137-3001 7075-T6 EXTRUSION, 29.5" LONG, PO NR 7212319, PER B727 SRM 53-10-2 FIG 1 AND 51-20-1.  TREATED, PRIMED, AND INSTALLED NEW "C" CHANNEL PER B727 SRM 51-10-2 AND 51-30-2.

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