# Accident 20120628015599A: Mooney M20J, Stewart, TN, June 28, 2012

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: June 28, 2012, 11:40 local time
- Place: Stewart, TN
- Damage: Substantial damage
- Phase of flight: Takeoff: Climb Out
- Operating rules: General operating rules (Part 91)
- Location: 36.3167° N, 87.9167° W: From the FAA
- Nearby events: https://openairdocs.org/map.md?lat=36.3167&lon=-87.9167&mi=10
- Aircraft: N174JB, a cancelled registration (https://openairdocs.org/deregistered/N174JB-2015-05-13) (OpenAirDocs)
- Registry model: Mooney M20J (registry code 5870219, https://openairdocs.org/model/mooney-m20j) (OpenAirDocs)
- Registry engine: Lycoming I0360 SER A&C (registry code 41511, https://openairdocs.org/engine/lycoming-i0360-ser-a-c) (OpenAirDocs)
- Reported make and model: MOONEY M20J
- Reported engine: LYCOMING I0360
- People aboard: 2
- Fatal injuries: 0
- Other injuries: 2
- Pilot certificates: Private pilot
- Pilot flight hours: 2,359 in this make and model, 10 in the last 90 days
- NTSB investigation: [NTSB ERA12LA422](https://openairdocs.org/ntsb/ERA12LA422) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20120628015599A

## Narrative

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

PILOT INITIATED GO AROUND WHILE TURNING CROSSWIND TO DOWNWIND THE # 3 CONNECTING ROD SEPERATED FORM THE CRANKSHAFT. THE CRANKSHAFT BROKE THE ROD IN HALF AND STRUCK THE ENGINE CASE BREAKING THE ENGINE COMPLETELY IN TWO. OIL COVERED THE AIRCRAFT WINDSHIELD AND THE PILOT MADE AND EMERGENCY DOWNWIND LANDING. THE AIRCRAFT LANDED LONG AND FAST. THE AIRCRAFT OVERAN THE RUNWAY AND HIT A BIRM ABOUT 75 YARDS OFF THE END OF THE RUNWAY, SHEARING THE LANDING GEAR AND HIT HARD ABOUT 50 FEET BEYOND THE BIRM COMMING TO REST. ENGINE TEAR DOWN REVEALED THAT THE #3 PISTON CONNECTING ROD CAP NUTS HAD COME OFF THE THE STUDS ALLOWING THE CAP TO COME OFF ALLOWING THE CONNECTING TO SEPERATED FROM THE CRANKSHAFT. ONCE THE CONNECTING ROD SEPERATED THE ENGINE SELF DISTRUCTED IN FLIGHT. THE ENGINE HAD 700 + HOURS SINCE OVERHAUL.

## The NTSB's investigation of this event (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB ERA12LA422](https://openairdocs.org/ntsb/ERA12LA422), Jun 28, 2012: Mooney M20J (N174JB), Mc Kinnon, TN, substantial damage. Probable cause: The separation of the piston connecting rod from the crankshaft due to inadequate installation from a mechanic, resulting in a total loss of engine power.

## Other reports on N174JB (1)

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

- [Incident 20050515016429I](https://openairdocs.org/incident/20050515016429I), May 15, 2005: Mooney M20J (N174JB), Clarksville, TN, Minor damage. (-23) On may 15, 2005, Mooney M20J, N124JB, was being operated by the owner, the pilot [privacy data omitted] who was receiving instruction from [privacy data…

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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