20100811042329A

Accident · Substantial damage

FAA accident report · Grumman ACF G-164B · Tracy, CA · August 11, 2010

Date: August 11, 2010 · 07:13 local
Place: Tracy, CA
Phase of flight: Takeoff: Climb Out
Operating rules: Agricultural (Part 137)
Operator: MBNG
Damage: Substantial damage
Aircraft: N6781K
NTSB investigation: NTSBWPR10LA396
Reported as: Grumman ACF G-164B
Reported engine: Pratt & Whitney R1340 MODIFIED
People aboard: 1
Fatal injuries: 0
Other injuries: 0
Pilot’s certificate: Commercial pilot
Pilot’s flight hours: 3,280 total2,200 in this make and model200 in the last 90 days

N6781KRegistration cancelled Jul 2, 2022 · Grumman Acft ENG Cor-Schweizer G-164BS/N 472B Airframe modelGrumman Acft ENG Cor-Schweizer G-164B Engine modelPratt & Whitney R1340 seriesReciprocating

From the FAA’s Accident/Incident Data System (AIDS), through its Aviation Safety Information Portal, as reported. The NTSB investigates accidents separately, and its record of an accident is the fuller one. The aircraft is matched to the registry 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.

What happened

The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.

Pilot had departed their private airstrip for his second application flight of the day. Shortly after takeoff at aprox 200 feet AGL pilot heard a loud "bang" from the engine followed by a violent and continuous shaking of the engine. At this point the engine was no longer developing power so the pilot dumped the load (250 gallons) to reduce weight in preparation for a forced landing. Pilot landed in a three point attitude in a grass pasture but was unable to stop the aircraft before striking an earthen ditch which caused the aircraft to pitch over its nose coming to rest inverted.

As the FAA filed it

PILOT HAD DEPARTED THEIR PRIVATE AIRSTRIP FOR HIS SECOND APPLICATION FLIGHT OF THE DAY. SHORTLY AFTER TAKEOFF AT APROX 200 FEET AGL PILOT HEARD A LOUD "BANG" FROM THE ENGINE FOLLOWED BY A VIOLENT AND CONTINUOUS SHAKING OF THE ENGINE. AT THIS POINT THE ENGINE WAS NO LONGER DEVELOPING POWER SO THE PILOT DUMPED THE LOAD (250 GALLONS) TO REDUCE WEIGHT IN PREPARATION FOR A FORCED LANDING. PILOT LANDED IN A THREE POINT ATTITUDE IN A GRASS PASTURE BUT WAS UNABLE TO STOP THE AIRCRAFT BEFORE STRIKING AN EARTHEN DITCH WHICH CAUSED THE AIRCRAFT TO PITCH OVER ITS NOSE COMING TO REST INVERTED.

NTSB investigation

The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.

NTSB WPR10LA396Accident · No injuriesLimited investigationFinal reportTracy, CAA total loss of engine power while maneuvering due to an internal catastrophic failure to the master rod and piston connecting rod links.Aug 11, 2010 · Substantial damage

Other reports on N6781K · 2

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

Accident 20160702013599AClimb · Laurel, DEAt the finish of the last pass of spraying a field in sussex county Delaware, pilot reports hearing a loud bang followed by loss of engine power. Aircraft was between 20 to 60 feet AGL and pilots states he initiated a 40 to 60 degree left turn into the wind…Jul 2, 2016 · Substantial damage Incident 19880518037929ILow Level Operations · Morganza, LAStruck a levee during a swath run and landed minus the gear. Blamed dirty windshield and blind by morning sun.May 18, 1988 · Substantial damage