# SDR HYIA20200227001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 23, 2020
- Submitted: February 27, 2020
- Operation: Air carrier
- Aircraft: [N7037E](https://openairdocs.org/aircraft/N7037E), registered now
- Make and model: Cessna 402C
- Registry model: [Cessna 402C](https://openairdocs.org/model/cessna-402c) (OpenAirDocs)
- Aircraft serial: C4020471
- Aircraft time: 36,656 hours, 35,542 cycles
- Engine: Cont TSIO520VB
- Engine time: 7,689 hours
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Cylinder
- Part number: 658552A2
- Part serial: AC17HB196
- Condition: Low Pressure
- Location: Nr 6
- Part time: 705 hours
- Stage of operation: CR
- How discovered: O
- Nature of condition: R, J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/HYIA20200227001

## Discrepancy

PILOT REPORTED RIGHT ENGINE MAP FLUCTUATED IN FLIGHT.  MAINTENANCE INSPECTED AND FOUND TURBOCHARGER IMPELLER HARD TO MOVE AS WELL AS LOW COMPRESSION ON THE NUMBER 4 & 6 CYLINDERS.  TURBO AND CYLINDERS WERE REPLACED AND THE AIRCRAFT WAS RELEASED TO SERVICE.

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