# SDR 2026FA0000903

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 7, 2026
- Submitted: October 24, 2026
- Operation: General aviation
- Aircraft: [N715ML](https://openairdocs.org/aircraft/N715ML), registered now
- Make and model: Cirrus SR20
- Registry model: [Cirrus SR20](https://openairdocs.org/model/cirrus-design-sr20) (OpenAirDocs)
- Aircraft serial: 10573
- Aircraft time: 414 hours, 414 cycles
- Engine: Lyc IO390A1A6
- Engine time: 414 hours, 414 cycles
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Pushrod
- Condition: Bent
- Part time: 414 hours
- Component: Exhaust Valve, Lyc
- Stage of operation: TX
- How discovered: O
- Nature of condition: E
- Precautionary procedure: E
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2026FA0000903

## Discrepancy

NR 2 EGT SLOW TO RISE,   UPON RUN UP, FOUND DIFFICULT TO START, ENGINE RUNNING VERY ROUGH WITH POOR ACCELERATION. FOUND NR 2 PUSH ROD AND SHROUD BENT. REAMED ALL EXHAUST VALVE GUIDES IAW LYC SI1485B, MSB 388C, SI1425A, AND THE LYC IO390-CMM.  REINSTALLED THE VALVES WITH NEW KEEPERS, ROCKER SHAFT GASKETS,  REPLACED NR 2 PUSH ROD, NR 2 HYDRAULIC LIFTER ASSEMBLY, NR 2 TAPPET SOCKET, NR 2 PUSH ROD SHROUD TUBE, SHROUD TUBE SEAL, SHROUD TUBE SLEEVE.. REPLACED ALL ROCKER BOX SILICON GASKETS.

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