During the takeoff following alternator maintenance; a M-20 pilot experienced what he believed was a...

Attributes
ACN	1276486
Time
Date	201506
Local Time Of Day	1201-1800
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	M-20 Series Undifferentiated or Other Model
Operating Under FAR Part	Part 91
Flight Phase	Initial Climb Takeoff
Flight Plan	IFR
Component
Aircraft Component	Spark Plug
Person 1
Function	Pilot Flying Single Pilot
Qualification	Flight Crew Instrument Flight Crew Private
Experience	Flight Crew Last 90 Days 28 Flight Crew Total 800 Flight Crew Type 558
Events
Anomaly	Aircraft Equipment Problem Critical Ground Event / Encounter Other / Unknown

Narrative:

Ground assigned me an intersection departure on runway xy. I declined the intersection departure and requested full length as it was the first flight post-maintenance. Runway xy is 10;000 ft in length with a grass overrun area at the end. After runup; I took off and when I reached approximately 150 feet AGL; I experienced what felt to be a complete loss of engine power; pulled the throttle to the idle position; configured the aircraft for landing and landed straight ahead; overshooting the end of the runway. I landed in the grass field past the end of the runway and slightly to the right to avoid approach lights. Prior to the incident; maintenance to the alternator was performed in which the air ducting to the fuel servo had been removed. It was reported to me that mechanical examination after the incident revealed that both spark plugs in the #4 cylinder experienced destructive damage as well as damage to the top of the piston.

Original NASA ASRS Text

Title: During the takeoff following alternator maintenance; a M-20 pilot experienced what he believed was a complete power loss. He landed long and rolled of the runway end. Later; Maintenance found number four piston top and both its spark plugs damaged.

Narrative: Ground assigned me an intersection departure on Runway XY. I declined the intersection departure and requested full length as it was the first flight post-maintenance. Runway XY is 10;000 FT in length with a grass overrun area at the end. After runup; I took off and when I reached approximately 150 feet AGL; I experienced what felt to be a complete loss of engine power; pulled the throttle to the idle position; configured the aircraft for landing and landed straight ahead; overshooting the end of the runway. I landed in the grass field past the end of the runway and slightly to the right to avoid approach lights. Prior to the incident; maintenance to the alternator was performed in which the air ducting to the fuel servo had been removed. It was reported to me that mechanical examination after the incident revealed that both spark plugs in the #4 cylinder experienced destructive damage as well as damage to the top of the piston.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.

During the takeoff following alternator maintenance; a M-20 pilot experienced what he believed was a complete power loss. He landed long and rolled of the runway end. Later; maintenance found number four piston top and both its spark plugs damaged.