# SDR DHL2005805675

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 21, 2005
- Submitted: March 30, 2005
- Operation: Air carrier
- Aircraft: [N805DH](https://openairdocs.org/aircraft/N805DH), registered now
- Make and model: Doug DC-8-73F
- Registry model: [Doug DC-8-73F](https://openairdocs.org/model/douglas-dc-8-73f) (OpenAirDocs)
- Aircraft serial: 46125
- Aircraft time: 80,855 hours, 29,583 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Heat Exchanger
- Condition: Cracked
- Location: Rt Primary
- Part time: 80,855 hours, 29,583 cycles
- 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/DHL2005805675

## Discrepancy

0.500 CRACK IN SKIN OF RT PRIMARY HEAT EXCHANGER AFT LWR CORNER STA -12.000 L-27R (MAJOR REPAIR).  PERFORMED MAJOR REPAIR IAW FAA FORM 8110-3 DATED 03-16-05 DWG X83-R05, REV IR DATED 03-01-05.  REMOVED FASTENERS IAW SRM 51-1-21 PG 1.  CUT OUT DAMAGED SECTION IAW DWG X83-R07.  PERFORMED NDT INSP IAW DC8 NDT SPM PART 06-10-01-001.  FABRICATED REPAIR DOUBLER (AL2024-T3 0.050) REPAIR TRIPLER (AL2024-T3 0.063) AND FILLER (AL2024T3 0.100) IAW DWG X83-R05.  CLEANED, TREATED AND PRIMED AREA AND REPAIR PARTS IAW SRM 51-1-8B.  INSTALLED REPAIR PARTS IAW DWG X83-R05 SRM 51-1-20D PG 9, SRM 51-1-21 PG 1, SRM 51-3-0 PG 1, SRM 51-1-26.  TORQUED IAW SRM 51-3-1.

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