# SDR 24331

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 2, 2004
- Submitted: November 24, 2004
- Operation: General aviation
- Filed by: [Cirrus Design Corporation, repair station YD5R855Y](https://openairdocs.org/faa-repair-station/YD5R855Y/cirrus-design-corporation.md) (OpenAirDocs)
- Aircraft: N361CD
- Make and model: Cirrus SR22
- Registry model: [Cirrus SR22](https://openairdocs.org/model/cirrus-design-sr22) (OpenAirDocs)
- Aircraft serial: 0885
- Aircraft time: 312 hours
- System (JASC): [1430 · Fasteners](https://openairdocs.org/jasc/1430)
- Part: Bolt
- Part number: AN334
- Part serial: NONE
- Condition: Chafed
- Location: Alt Air Door
- Part time: 312 hours
- 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/24331

## Discrepancy

THE BOLT (P/N AN3-34) THAT SERVES AS THE PIVOT FOR THE ALTERNATE AIR DOOR IN THE INDUCTION DUCT ASSEMBLY (P/N 15708-001) IS BEING CHAFFED BY THE INDUCTION DUCT SUPPORT BRACKET (P/N 15671-002).  IN ADDITION TO THE CHAFFED BOLT THE INDUCTION DUCT ASSY IS SUSCEPTIBLE TO CRACKING.  ALSO INSPECTED 14 OTHER AIRCRAFT WITH COMPARABLE TIME OR LESS AND FOUND SIGNS OF CHAFFING AND/OR INDUCTION DUCT CRACKING REQUIRING REPLACEMENT OF THE INDUCTION DUCT ASSY.  THIS CONDITION IS VERY DIFFICULT TO INSPECT WITHOUT REMOVING THE INDUCTION DUCT ASSY.

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