# SDR B3OR20050718

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 18, 2005
- Submitted: July 19, 2005
- Operation: General aviation
- Aircraft: [N6621A](https://openairdocs.org/aircraft/N6621A), registered now
- Make and model: Cessna 210N
- Registry model: [Cessna 210N](https://openairdocs.org/model/cessna-210n) (OpenAirDocs)
- Aircraft serial: 21063559
- Aircraft time: 6,214 hours, 4,752 cycles
- Engine: Cont IO550*
- Engine time: 934 hours, 1,502 cycles
- Propeller: Hartzl PHCJ3YF1
- System (JASC): [7160 · Engine Air Intake System](https://openairdocs.org/jasc/7160)
- Part: Intake Pipe
- Part number: 646205
- Condition: Cracked
- Location: Nr 4 Cylinder
- Part time: 934 hours, 1,502 cycles
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/B3OR20050718

## Discrepancy

WHILE REMOVING LT MAGNETO FOR TBO, THE NR 4 CYLINDER INTAKE PIPE HAD TO BE REMOVED FOR ACCESS TO THE MAGNETO. REMOVAL OF THE INTAKE PIPE REVEALED THAT THE INTAKE PIPE HAD A CRACK IN THE FLARE END THAT IS SECURED TO THE CYLINDER INTAKE PORT. FURTHER INVESTIGATION REVEALED THAT THE NR 4 INTAKE PIPE WAS THE ONLY PIPE FOUND IN THIS CONDITION. THIS ENGINE HAD AN INTERMITTENT PROBLEM OF RUNNING ROUGH FOR A FEW MOMENTS THEN BACK TO RUNNING NORMALLY. ALL IO-550P OPERATORS SHOULD BE MADE AWARE OF THIS PROBLEM.

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