Status:	Final
Date:	24 JUN 1974
Time:	16:45 EDT
Type:	Gulfstream Aerospace G-1159 Gulfstream II
Operator:	IBM
Registration:	N720Q
C/n / msn:	58
First flight:	1969
Total airframe hrs:	3224
Engines:	2 Rolls Royce 511-8 Spey
Crew:	Fatalities: 3 / Occupants: 3
Passengers:	Fatalities: 0 / Occupants: 0
Total:	Fatalities: 3 / Occupants: 3
Airplane damage:	Written off
Airplane fate:	Written off (damaged beyond repair)
Location:	Kline, SC (United States of America)
Phase:	En route (ENR)
Nature:	Training
Departure airport:	Savannah International Airport, GA (SAV/KSAV), United States of America
Destination airport:	Savannah International Airport, GA (SAV/KSAV), United States of America

Narrative:
An electrical short circuit caused an unwanted extension of the ground and flight spoilers during a training flight. Control was lost; the aircraft made several 360deg rolls and then dove into a swampy area.

PROBABLE CAUSE: "An unwanted extension of the ground and flight spoilers, which resulted in a loss of control at an altitude from which recovery could not be made. The ground spoilers probably deployed because of a hot electrical short in the spoiler extend circuitry. Whereas the spoilers probably deployed symetrically, the left ground spoiler actuator failed in flight and caused a loss of lateral control. The subsequent logs of pitch control was caused by the full nosedown elevator trim tab position and the high aircraft speed."

Sources:
» NTSB