# SDR VA12004F00000

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 2, 2004
- Submitted: September 28, 2004
- Operation: Air carrier
- Aircraft: [N421GF](https://openairdocs.org/aircraft/N421GF), registered now
- Make and model: Cessna 421C
- Registry model: [Cessna 421C](https://openairdocs.org/model/cessna-421c) (OpenAirDocs)
- Aircraft serial: 421C1110
- Engine: Cont GTSIO520N
- System (JASC): [8520 · Reciprocating Engine Power Section](https://openairdocs.org/jasc/8520)
- Part: Crankshaft
- Part number: 653020
- Part serial: C159705N
- Condition: Broken
- Location: Engine
- Part time: 1,317 hours
- Stage of operation: NR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/VA12004F00000

## Discrepancy

CRANKSHAFT HAD BEEN ULTRASONIC INSPECTED IAW APPLICABLE CSB 99-6A DURING OVERHAUL.  RETURNED TO SERVICE AND AFTER 141.1 HOURS, FAILED IN SAME GENERAL OF REQUIRE INSPECTIONS.  BROKEN AT NR 3 MAIN JOURNAL TO NR 5 ROD THROW.

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