# Incident 20070817826919I: Cessna 172N, Lanai, HI, August 17, 2007

- Type: FAA incident report (Accident/Incident Data System), as reported
- Date: August 17, 2007, 17:15 local time
- Place: Lanai, HI
- Damage: Minor damage
- Phase of flight: Normal Cruise
- Operating rules: General operating rules (Part 91)
- Operator: HGZA
- Location: 20.8680° N, 156.9002° W: Placed by OpenAirDocs: center of Lānaʻi, HI, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=20.8680&lon=-156.9002&mi=10
- Aircraft: N5207D, a cancelled registration (https://openairdocs.org/deregistered/N5207D-2009-08-11) (OpenAirDocs)
- Registry model: Cessna 172N (registry code 2072434, https://openairdocs.org/model/cessna-172n) (OpenAirDocs)
- Registry engine: Lycoming 0-320 series (registry code 41508, https://openairdocs.org/engine/lycoming-0-320-series) (OpenAirDocs)
- Reported make and model: CESSNA 172N
- Reported engine: LYC O320H2AD
- People aboard: 3
- Fatal injuries: 0
- Pilot flight hours: 626 total, 450 in this make and model, 10 in the last 90 days
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20070817826919I

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

(-23) PIC REPORTED A ROUGH RUNNING ENGINE. THE AIRPLANE ENGINE HAD A POWER LOSS OF 400-500 RPM. ENGINE COWLING WAS OBSERVED SHUDDERING. REDUCED POWER SETTING AND PROCEEDED WITH THE FLIGHT. A FEW MINUTES LATER THE ENGINE STARTED TO LOSE POWER AGAIN. PIC ELECTED TO LAND, DECLARED AN EMERGENCY AND LANDED AT 1,200-1300 MSL. DAMAGE: LEFT WING TIP AND LEFT NAV. LIGHT, NOSE AND MAIN TIRES BLOWN, AND BENT PROPELLER. INVESTIGATION: WE HAVE NOT BEEN ABLE TO SEE THE ACTUAL AIRPLANE DAMAGE OR EXAMINE THE ENGINE. AWAITING THE AIRPLANE TO BE LIFTED TO A SAFE LOCATION FOR INITIAL EXAMINATION. FINDING: #2 CYLINDER LOWER SPARK PLUG DEFECTIVE WITH A CRACKED CARBINE RESISTOR AND FIXED GLASS SEAL. THE TOP SPARK PLUG WAS PRODUCING, PROVIDING LOWER SPARK AND CONTRIBUTED TO THE CYLINDER FAILING TO PRODUCE POWER.

## Other reports on N5207D (1)

Matched to the same aircraft by N-number and date.

- [Incident 20041120032619I](https://openairdocs.org/incident/20041120032619I), Nov 20, 2004: Cessna 172N (N5207D), Honolulu, HI, Minor damage. (-23) On November 20, 2004 at approximately 2015Z, while taxiing to park, aircraft N5207D struck the right wing on a chain link fence. No injuries to the sole…

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. For accidents, the NTSB's own investigation is the fuller record.

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