Crash of a Piper PA-31T Cheyenne in Harrisburg: 9 killed

Date & Time: Feb 24, 1977 at 0924 LT
Type of aircraft:
Registration:
N631PT
Flight Phase:
Flight Type:
Survivors:
No
Site:
Schedule:
New Cumberland - Harrisburg - University Park - New Cumberland
MSN:
31-7720001
YOM:
1977
Crew on board:
2
Crew fatalities:
Pax on board:
6
Pax fatalities:
Other fatalities:
Total fatalities:
9
Captain / Total flying hours:
4469
Captain / Total hours on type:
32.00
Aircraft flight hours:
173
Circumstances:
Shortly after takeoff from Harrisburg-Capital City Airport runway 08, the twin engine aircraft went out of control and crashed in flames onto a house located in a populated area in the town of Bressler, 1,55 statute miles from the departure end of runway 08. The aircraft disintegrated on impact and all eight occupants were killed as well as one people in the house.
Those on board were:
Crew:
David M. Wolf, pilot,
Edward Soisson, copilot.
Passengers:
William Sherlock, State Transportation Secretary,
Richard C. Frame, State GOP Chairman,
William R. Smith, Sherlock's Chief of Staff,
Charles Wilson, PennDOT Public Relations Officer,
Larry G. Pennsyl, PennDOT photographer,
John W. Krebs, PennDOT data processing manager.
Probable cause:
The probable cause of the accident was the flightcrew's failure to insure that the aircraft was loaded properly and that it's center of gravity was within certificated limits. As a result, the aircraft's control characteristics were degraded significantly by a center of gravity well aft of the certificated limits. This imbalance led to the pilot's inability to control a longitudinally unstable aircraft during a climbing turn in instrument meteorological conditions. There was no evidence of engine failure or malfunction, the flight crew was properly certified and the pilots had no medical or psychological problems. The accident was not survivable.
Final Report:

Crash of a Piper PA-31-310 Navajo in Springdale: 5 killed

Date & Time: Feb 22, 1977 at 1705 LT
Type of aircraft:
Operator:
Registration:
N9145Y
Flight Phase:
Flight Type:
Survivors:
No
Schedule:
Fort Worth - Saint Louis
MSN:
31-194
YOM:
1968
Crew on board:
1
Crew fatalities:
Pax on board:
4
Pax fatalities:
Other fatalities:
Total fatalities:
5
Captain / Total flying hours:
353
Captain / Total hours on type:
43.00
Circumstances:
While in cruising altitude, the twin engine airplane entered an area of turbulences. The airframe failed in flight, the airplane entered a dive and eventually crashed in a prairie. All five occupants were killed.
Probable cause:
Airframe failure in flight due to improper maintenance and inspection of aircraft. The following contributing factors were reported:
- Failure of the flight controls surfaces: elevator assembly, attachments,
- Flutter,
- Incorrect weather forecast,
- Turbulence in flight, clear air,
- Separation in flight,
- Elevator not rebalanced after repainting,
- Rivet-nut improperly installed,
- Turbulences not forecasted.
Final Report:

Crash of a Lockheed 18-56 LodeStar in Truckee

Date & Time: Feb 21, 1977 at 1620 LT
Type of aircraft:
Operator:
Registration:
N100GP
Flight Phase:
Survivors:
Yes
MSN:
2571
YOM:
1943
Crew on board:
2
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
0
Captain / Total flying hours:
7191
Captain / Total hours on type:
15.00
Circumstances:
Just after liftoff, while in initial climb, the twin engine airplane encountered difficulties to gain height. It stall, struck the ground and crashed in flames. Both occupants were injured while the aircraft was destroyed.
Probable cause:
Stall during initial climb due to inadequate preflight preparation on part of the crew. The following contributing factors were reported:
- Failed to maintain flying speed,
- Airframe ince,
- 12 inches spanwise ice strip on upper wing surface.
Final Report:

Crash of a Rockwell Grand Commander 680FL in Savoonga

Date & Time: Feb 19, 1977 at 1050 LT
Operator:
Registration:
N112NA
Survivors:
Yes
Schedule:
Nome - Savoonga
MSN:
680-1750-145
YOM:
1968
Location:
Crew on board:
1
Crew fatalities:
Pax on board:
2
Pax fatalities:
Other fatalities:
Total fatalities:
0
Captain / Total flying hours:
19076
Captain / Total hours on type:
321.00
Circumstances:
While descending to Savoonga, the pilot encountered poor weather conditions when the airplane struck the ground few miles from the airstrip. All three occupants were injured and the aircraft was destroyed. The accident occurred in whiteout conditions (IMC conditions) with a 500 feet ceiling.
Probable cause:
Controlled flight into terrain in traffic pattern-circling after the pilot continued VFR flight into adverse weather conditions. The following contributing factors were reported:
- Ice propeller,
- Airframe ice,
- Whiteout conditions,
- Icing conditions including sleet and freezing rain,
- Low ceiling,
- Visibility below minimums.
Final Report:

Crash of a Beechcraft D18S in McAllen: 1 killed

Date & Time: Feb 19, 1977 at 1047 LT
Type of aircraft:
Registration:
N762D
Flight Phase:
Flight Type:
Survivors:
No
Schedule:
McAllen - Laredo
MSN:
A-803
YOM:
1952
Location:
Crew on board:
1
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
1
Captain / Total flying hours:
13258
Captain / Total hours on type:
2002.00
Circumstances:
Just after takeoff from McAllen-Miller Airport, while in initial climb, the left engine failed. The airplane rolled to the left then lost height and crashed in flames. The pilot, sole on board, was killed.
Probable cause:
Failure of the left engine during initial climb, stall and uncontrolled descente. The following contributing factors were reported:
- Inadequate preflight preparation,
- Water in fuel,
- Failed to maintain flying speed,
- Aircraft last refueled on 21 October 1976 and parked outside,
- No witnesses observed preflight inspection.
Final Report:

Crash of a Beechcraft D18S in Covington

Date & Time: Feb 14, 1977 at 2326 LT
Type of aircraft:
Registration:
N321D
Flight Phase:
Flight Type:
Survivors:
Yes
Schedule:
Covington - Columbus
MSN:
A-413
YOM:
1948
Crew on board:
1
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
0
Captain / Total flying hours:
14136
Captain / Total hours on type:
6233.00
Circumstances:
On a slush covered runway, the pilot completed a premature liftoff. After rotation, the airplane stalled during initial climb and crashed. The aircraft was destroyed and the pilot, sole on board, was seriously injured.
Probable cause:
Stall during initial climb after the pilot completed a premature liftoff and failed to maintain flying speed. The following contributing factors were reported:
- Inadequate preflight preparation,
- Physical impairment,
- Ice/slush on runway,
- Cargo net found underneath mail,
- Pilot no feeling well.
Final Report:

Crash of a Piper PA-31-325 Navajo in Anthony: 6 killed

Date & Time: Feb 11, 1977 at 1656 LT
Type of aircraft:
Registration:
N59838
Flight Phase:
Flight Type:
Survivors:
No
Schedule:
Aspen - Tulsa
MSN:
31-7612047
YOM:
1976
Location:
Crew on board:
1
Crew fatalities:
Pax on board:
5
Pax fatalities:
Other fatalities:
Total fatalities:
6
Captain / Total flying hours:
2880
Circumstances:
while in cruising altitude in IFR weather conditions, the pilot lost control of the airplane that entered a dive. Both wings, engines and fuselage separated during the descent and the aircraft crashed in an open field. All six occupants were killed.
Probable cause:
Airframe failure in flight and uncontrolled descent after exceeded designed stress limits of aircraft. The following contributing factors were reported:
- Wings: spars,
- Fuselage: Other,
- Overload failure,
- Separation in flight,
- Snow,
- Attempted operation beyond experience/ability level,
- Control lost for undetermined reason,
- Pilot not multi-engine rated.
Final Report:

Crash of a Beechcraft U-21A Ute in the Cook Inlet: 7 killed

Date & Time: Feb 10, 1977
Type of aircraft:
Operator:
Registration:
67-18081
Flight Phase:
Flight Type:
Survivors:
No
Schedule:
Elmendorf - King Salmon
MSN:
LM-81
YOM:
1967
Crew on board:
2
Crew fatalities:
Pax on board:
5
Pax fatalities:
Other fatalities:
Total fatalities:
7
Circumstances:
Few minutes after takeoff from Elmendorf AFB, while cruising in IMC conditions, the crew contacted ATC and requested the permission to obtain a higher level of flight. Shortly later, the airplane went out of control and crashed in the Cook Inlet. Intensive SAR operations were conducted but no trace of the airplane nor the seven occupants was ever found.
Crew:
Cpt Donald W. Deeter, pilot,
CW3 Ralph G. Battle, pilot,
Passengers:
SP4 Paul E. Jones,
Ltc William I. Barrett Jr.,
Ltc John S. Edge,
Maj James W. Nelson,
Maj Melvin J. Swiney.

Crash of a Swearingen SA226T Merlin IIIA in San Antonio: 2 killed

Date & Time: Feb 3, 1977 at 0054 LT
Registration:
N34SM
Survivors:
No
Schedule:
Seattle – San Antonio
MSN:
T-263
YOM:
1976
Crew on board:
2
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
2
Captain / Total flying hours:
18812
Captain / Total hours on type:
283.00
Circumstances:
While approaching San Antonio Airport by night, the crew encountered poor weather conditions with low ceiling, rain and fog. Too low, the airplane struck trees and crashed in flames few miles short of runway 12R. It was destroyed by a post crash fire and both pilots were killed.
Probable cause:
Collision with trees on initial approach due to improper IFR operation. The following contributing factors were reported:
- Low ceiling (200 feet),
- Rain,
- Fog,
- Cleared for ILS approach runway 12R, navigation receiver turned to frequency for ILS approach to runway 03R.
Final Report:

Crash of a Chase YC-122C Avitruc in Anchorage: 1 killed

Date & Time: Jan 31, 1977 at 1416 LT
Type of aircraft:
Operator:
Registration:
N5904V
Flight Phase:
Flight Type:
Survivors:
Yes
Schedule:
Anchorage - Nome
MSN:
CY-886
YOM:
1954
Crew on board:
3
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
1
Captain / Total flying hours:
5226
Captain / Total hours on type:
5.00
Circumstances:
Shortly after takeoff from Anchorage-Intl Airport, while climbing, the airplane stalled and crashed. A crew member was killed while two others were seriously injured.
Probable cause:
Stall during initial climb after the pilot-in-command failed to maintain flying speed. The following contributing factors were reported:
- Inadequate preflight preparation,
- Airframe ice,
- Frost found on wings after impact.
Final Report: