# SDR DHL2001705506

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 18, 2001
- Submitted: May 18, 2001
- Operation: Air carrier
- Aircraft: N705DH
- Make and model: Boeing 727-22C
- Registry model: [Boeing 727-22C](https://openairdocs.org/model/boeing-727-22c) (OpenAirDocs)
- Aircraft serial: 19191
- System (JASC): [7110 · Engine Cowling System](https://openairdocs.org/jasc/7110)
- Part: Doubler
- Condition: Damaged
- Location: Cowling
- 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/DHL2001705506

## Discrepancy

AT C-CHECK, NR 3 ENG, LWR COWL INTERNAL SURFACE, RIGHT AFTER 2ND U-BOLT, STRINGER PREVIOUS DOUBLER REPAIR SHOWS BIG HOLE (8 O''CLOCK POS APPROX).  REMOVED DAMAGED EXISTING DOUBLER IAW B727 SRM 51-30-2.  FABRICATED DOUBLER 8 X 12 2024-0 .050 LOT 471153 PO 8319629.  HEAT TREATED IAW SRM-1003 FIG NR 6.  CLEANED, TREATED AND PRIMED IAW B727 SRM 51-10-2.  INSTALLED NEW DOUBLER IAW B727 SRM 51-30-2.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.