Zone
Crash of a Swearingen SA227AC Metro III in Bullhead City
Date & Time:
Jan 5, 1997 at 1243 LT
Registration:
N165SW
Survivors:
Yes
Schedule:
Long Beach - Grand Canyon
MSN:
AC-514
YOM:
1982
Crew on board:
2
Crew fatalities:
Pax on board:
19
Pax fatalities:
Other fatalities:
Total fatalities:
0
Captain / Total hours on type:
300.00
Copilot / Total hours on type:
56
Aircraft flight hours:
25111
Circumstances:
After executing a missed approach at the Grand Canyon Airport, the pilots diverted to the Bullhead City Airport. The pilots reported that minimal icing conditions were encountered with about 1/8 inch of ice accumulating on the aircraft wings. The pilots stated they cycled the deice boots to shed ice. They did not observe ice on the propeller spinners, and they did not activate the engines' 'override' ignition systems, as required by the airplane's flight manual. Use of 'override' ignition was required for flight into visible moisture at or below +5 degrees Celsius (+41 degrees Fahrenheit) to prevent ice ingestion/flameouts. Subsequently, both engines flamed out as the airplane was on about a 3 mile final approach for landing with the landing gear and flaps extended. The aircraft was destroyed during an off-airport landing.
Probable cause:
Failure of the pilot(s) to use 'override' ignition as prescribed by checklist procedures during an encounter with icing conditions, which subsequently led to ice ingestion and dual engine flame-outs. Factors related to the accident were: the adverse weather (icing) conditions, the accumulation of airframe/engine ice, and lack of suitable terrain in the emergency landing area.
Final Report:
Crash of a Piper PA-31-350 Navajo Chieftain in Grand Canyon: 8 killed
Date & Time:
Feb 13, 1995 at 1536 LT
Operator:
Registration:
N27245
Survivors:
Yes
Schedule:
Grand Canyon - Las Vegas
MSN:
31-7752121
YOM:
1977
Flight number:
6G45
Crew on board:
1
Crew fatalities:
Pax on board:
9
Pax fatalities:
Other fatalities:
Total fatalities:
8
Captain / Total hours on type:
480.00
Aircraft flight hours:
13367
Circumstances:
The charter flight was on a return tour trip after landing at the Grand Canyon National Park Airport. No fueling or maintenance was performed on the airplane while it sat on the ground for three hours. Shortly after takeoff from runway 21, the pilot transmitted that he had a problem and was declaring an emergency. He then stated '...I'm single engine right now....' The airplane was observed to be 100-200 feet above the terrain at the time. It continued flying for about 6 minutes, turning onto a crosswind, downwind, and then a right base leg for runway 21 before colliding with trees about 2.5 miles northeast of the airport. The airport is located in terrain that slopes upward from south to north and west to east. Winds were gusting to 29 knots. The density altitude was 6,870 feet. Examination of the suspect left engine did not reveal any evidence of failures or malfunctions. The investigation revealed deficiencies in the Federal Aviation Administration's oversight of the airline's maintenance program, and in the airline's extension of the time-in-service interval of the engines. The airline's AAIP does not require a maximum rated power check of the engines as required by the engine manufacturer's service instruction. In addition, the TBO of the engines had been extended from 1,800 to 2,400 hours.
Probable cause:
A loss of power on one engine for an undetermined reason(s), and the pilot's improper decision to return to the departure airport for landing which necessitated maneuvering over increasingly higher terrain. Factors in the accident were: the high gusting wind, the high density altitude, the rising terrain, and the reduced single-engine performance capability of the airplane under these conditions.
Final Report:
