Accident Pitts Model 12 N512P,
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ASN Wikibase Occurrence # 305857
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Date:Saturday 14 January 2023
Type:Silhouette image of generic PTMS model; specific model in this crash may look slightly different    
Pitts Model 12
Owner/operator:M12 Aviation LLC
Registration: N512P
MSN: 291
Year of manufacture:2013
Fatalities:Fatalities: 0 / Occupants: 2
Aircraft damage: Substantial
Location:near Conroe-North Houston Regional Airport (CXO/KCXO), Conroe, TX -   United States of America
Phase: Manoeuvring (airshow, firefighting, ag.ops.)
Departure airport:Conroe-North Houston Regional Airport, TX (CXO/KCXO)
Destination airport:Conroe-North Houston Regional Airport, TX (CXO/KCXO)
Investigating agency: NTSB
Confidence Rating: Accident investigation report completed and information captured
On January 14, 2023, about 1425 central standard time, a Pitts Model 12 airplane, N512P, sustained substantial damage when it was involved in an accident near Conroe, Texas. The pilot sustained minor injuries and the passenger sustained serious injuries. The airplane was operated as a Code of Federal Regulations Part 91 personal flight.

The pilot and passenger were conducting a local flight to practice maneuvers and landings. About 3 to 4 minutes after takeoff, and 2,000 ft above ground level, the pilot noticed a master warning light on instrument panel but did not notice any anomalies or problems. The pilot elected to return to the airport, and about 1 minute later the engine sustained a series of power loss fluctuations. The pilot attempted to troubleshoot the problem but was unsuccessful and the engine lost total power. Unable to reach the airport or a field due to a high descent rate, the pilot performed a forced landing to a nearby roadway. During the landing, the airplane impacted a powerline and terrain before coming to rest inverted. The airplane sustained substantial damage to the wings, fuselage, and empennage.

Postaccident examination of the airplane revealed non-ferrous metallic debris throughout the entire fuel system; the source of the debris was unable to be determined. Due to a leak noted during a functional test, the engine-driven fuel pump was disassembled. Scratches and scoring marks were noted on the pressure relief valve seat, which allowed fuel into the air side cavity of the fuel pump. It is likely the fuel pump air cavity filled with fuel, which equalized the pump pressure and restricted fuel flow to the engine. The restricted fuel flow resulted in a total loss of engine power.

Probable Cause: The failure of the engine-driven fuel pump, which resulted in a total loss of engine power. Contributing to the failure of the fuel pump was an unknown non-ferrous metallic debris that was noted throughout the airplane’s fuel system.

Accident investigation:
Investigating agency: NTSB
Report number: CEN23LA081
Status: Investigation completed
Duration: 1 year and 2 months
Download report: Final report

Sources: (photos)



Photo: NTSB

Revision history:

29-Mar-2024 22:23 Captain Adam Updated [Time, Location, Phase, Source, Embed code, Narrative, Accident report, Photo]

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