Accident Lockheed L-188CF Electra N855U,

ASN Wikibase Occurrence # 331028

Date:	Monday 24 August 1970
Time:	07:08
Type:	Lockheed L-188CF Electra
Owner/operator:	Universal Airlines
Registration:	N855U
MSN:	2012
Year of manufacture:	1959
Fatalities:	Fatalities: 0 / Occupants: 3
Aircraft damage:	Destroyed, written off
Category:	Accident
Location:	Ogden-Hill AFB, UT (HIF) - United States of America
Phase:	Take off
Nature:	Cargo
Departure airport:	Ogden-Hill AFB, UT (HIF/KHIF)
Destination airport:	Grand Forks Airport, ND (GFK/KGFK)
Confidence Rating:	Accident investigation report completed and information captured

Narrative:
The Electra operated on flight Logair 9524 from Ogden-Hill AFB, UT (HIF) to Grand Forks Airport, ND (GFK) via Mountain Home AFB, ID (MUO), Spokane-Fairchild AFB, WA (SKA), Great Falls AFB, MT (GFA) and Minot AFB, ND (MIB).
The aircraft took off from runway 32. Shortly after gear-retraction, the nose pitched 15 degrees down and the aircraft crashed onto the runway, 8200 feet from the threshold. After sliding 2600 feet the cargo plane turned 90 degrees and came to a stop. Contrary to company regulations the crew used just one instead of three hydraulic pumps for takeoff. Because the pumps supply pressure to the flight control booster system, the crew were not able to control pitch.

PROBABLE CAUSE:
pilot in command - inadequate preflight preparation and/or planning
pilot in command - failed to follow approved procedures,directives,etc.
personnel - flight engineer: inadequate preflight
miscellaneous acts,conditions - action,lack of
miscellaneous acts,conditions - pressure too low
FACTORS:
systems - hydraulic system: hydraulic pumps
systems - flight control systems: flight control boost systems, hydraulic

Accident investigation: