Date:	Monday 25 February 1991
Time:	13:58 LT
Type:	North American T-28B
Owner/operator:	Worldwide Aeronautical Ind,inc
Registration:	N138WW
MSN:	138150
Engine model:	Lycoming R1820-71
Fatalities:	Fatalities: 0 / Occupants: 1
Aircraft damage:	Substantial
Category:	Accident
Location:	Mesa, Arizona -   United States of America
Phase:	En route
Nature:	Ferry/positioning
Departure airport:	Tucson, AZ (KDMA)
Destination airport:	Mesa, AZ (KFFZ)
Investigating agency:	NTSB
Confidence Rating:	Accident investigation report completed and information captured

Narrative:
THE AIRCRAFT'S ENGINE UPPER CRANKCASE OIL BREATHER LINE FAILED DURING CRUISE FLIGHT, WHICH ALLOWED THE ENGINE'S OIL TO VENT OVERBOARD. THE LACK OF OIL CAUSED THE ENGINE TO SEIZE AND A TOTAL LOSS OF ENGINE POWER RESULTED. THE PILOT SET UP A POWER-OFF APPROACH TO A ROAD, BUT ALTERED THE AIRCRAFT'S COURSE DUE TO EXCESSIVE VEHICULAR TRAFFIC ON THE ROAD. HE ATTEMPTED TO LAND THE AIRCRAFT IN AN OPEN AREA. ON SHORT FINAL, THE PILOT SAW HIGH TENSION WIRES. TO AVOID COLLIDING WITH THE WIRES, THE PILOT PULLED THE NOSE OF THE AIRCRAFT UP. THE AIRCRAFT CLEARED THE WIRES, BUT THE AIRSPEED SLOWED CAUSING THE AIRCRAFT TO STALL, RESULTING IN A HARD LANDING.

Probable Cause: 1) THE FAILURE OF THE AIRPLANE'S ENGINE UPPER CRANKCASE OIL BREATHER LINE; 2) TOTAL LOSS OF ENGINE POWER CAUSED BY A LACK OF LUBRICATING OIL. A FACTOR IN THIS ACCIDENT WAS THE PILOT INADVERTANTLY STALLING THE AIRCRAFT TO AVOID A COLLISION WITH A WIRE.

NTSB LAX91LA121
FAA register: http://dms.ntsb.gov/aviation/AccidentReports/3tlrcg3are4hgdeok01i44uh1/D09202011120000.pdf
http://www.warbirdregistry.org/t28registry/t28-138150.html
http://aircrashed.com/aircraft/aLAX91LA121.shtml
https://www.aircraftone.com/aircraft/accidents/20001212X16482.asp,https://www.aircraftone.com/aircraft/accidents/20001212x16482.asp
http://www.joebaugher.com/navy_serials/thirdseries16.html

Date/time	Contributor	Updates
20-Sep-2011 13:30	Dr. John Smith	Added
21-Dec-2016 19:26	ASN Update Bot	Updated [Time, Damage, Category, Investigating agency]
21-Apr-2024 08:06	ASN Update Bot	Updated [Time, Cn, Operator, Other fatalities, Nature, Departure airport, Destination airport, Source, Narrative, Category, Accident report]