Crash of a Piper PA-31-310 Navajo in Taplin: 3 killed

Date & Time: May 6, 1977 at 0615 LT
Type of aircraft:
Registration:
N7439L
Flight Phase:
Survivors:
No
Schedule:
Taplin - Ambler
MSN:
31-328
YOM:
1968
Crew on board:
1
Crew fatalities:
Pax on board:
2
Pax fatalities:
Other fatalities:
Total fatalities:
3
Captain / Total flying hours:
18000
Captain / Total hours on type:
1000.00
Circumstances:
The takeoff was initiated in adverse weather conditions with fog. After takeoff, the twin engine airplane descended and crashed half a mile east of the airfield. The aircraft was destroyed and all three occupants were killed.
Probable cause:
Controlled flight into terrain during climb after the pilot initiated flight in adverse weather conditions. The exact cause of the accident could not be determined. The following findings were reported:
- Fog,
- Visibility 1/4 mile or less.
Final Report:

Crash of a Piper PA-31-310 Navajo in Zaria

Date & Time: May 6, 1977
Type of aircraft:
Registration:
5N-AVB
Flight Type:
Survivors:
Yes
Schedule:
Zaria - Zaria
MSN:
31-7300163
YOM:
1973
Location:
Country:
Region:
Crew on board:
2
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
The crew was completing a local training mission at Zaria Airport. On final approach, the twin engine airplane crashed in unknown circumstances. The aircraft was destroyed while both occupants, an instructor and a pilot under supervision were uninjured.

Crash of a Piper PA-31-310 Navajo in Normana

Date & Time: May 3, 1977 at 1325 LT
Type of aircraft:
Registration:
N6578L
Flight Phase:
Flight Type:
Survivors:
Yes
Schedule:
Austin - McAllen
MSN:
31-503
YOM:
1969
Location:
Crew on board:
1
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
0
Captain / Total flying hours:
3100
Circumstances:
While in cruising altitude, the right engine caught fire and failed. The pilot reduced his altitude and completed an intentional wheels-up landing in a pasture. The airplane slid on its belly and came to rest. The pilot was uninjured while the aircraft was damaged beyond repair.
Probable cause:
Engine fire in flight due to improper maintenance. The following contributing factors were reported:
- Inadequate maintenance and inspection,
- Engine structure - valve assemblies missing,
- Intentional wheels-up landing,
- Fire in engine,
- Suspected or known aircraft damage,
- Three valve cover screws missing from both center cylinder on right engine, ten others loose.
Final Report:

Crash of a Piper PA-31-310 Navajo in Oakland: 1 killed

Date & Time: Mar 12, 1977 at 0508 LT
Type of aircraft:
Registration:
N6616L
Flight Type:
Survivors:
No
Schedule:
Fresno - Oakland
MSN:
31-549
YOM:
1969
Crew on board:
1
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
1
Captain / Total flying hours:
3642
Circumstances:
On final approach to Oakland Airport by night, the left engine failed. The pilot lost control of the airplane that lost height, hit wires/poles and crashed short of runway. The pilot, sole on board, was killed.
Probable cause:
Engine failure on final approach after the pilot attempted operation with known deficiencies in equipment. The following contributing factors were reported:
- Mismanagement of fuel,
- Fuel starvation,
- High obstructions,
- Left engine boost pump written up as inoperative,
- Left fuel gage showed 1/2, right showed empty, crossfeed ON.
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 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 Piper PA-31-310 Navajo in walney Island: 1 killed

Date & Time: Nov 26, 1976 at 2005 LT
Type of aircraft:
Operator:
Registration:
G-BBPC
Survivors:
Yes
Schedule:
Edinburgh - Walney Island
MSN:
31-805
YOM:
1973
Region:
Crew on board:
1
Crew fatalities:
Pax on board:
5
Pax fatalities:
Other fatalities:
Total fatalities:
1
Captain / Total flying hours:
10000
Aircraft flight hours:
1647
Circumstances:
The aircraft was operating a company communications flight from Edinburgh to Walney Island (Barrow-in-Furness) and departed from Edinburgh at 1908 hrs with five passengers on board, one of whom occupied the right hand pilot's seat. The flight proceeded normally on airways at FL080 until leaving controlled airspace south of Dean Cross at 1940 hrs, when the pilot contacted Walney Island aerodrome and requested the latest weather and landing information. The tower reported that there was heavy rain and a strong wind from 300° at 25 to 30 knots, and the pilot was advised that the runway in use was 30 and the QFE 1001. It was dark night with an estimated visibility of 8 km. The aircraft was next in contact with Walney Island at 1952 hrs when the pilot queried the serviceability of the non-directional beacon (NDB) 'WL'. The tower replied that it was operating. The passenger in the right hand seat states that at about this time the lights of Barrow-in-Furness could be seen intermittently through the clouds, but that the pilot was unable to see the runway lights. The pilot then requested the other runway lights to be put on, and the tower confirmed that all the lights were on. A short time later, the pilot called to say that he was on a left hand base leg for runway 30 and he received clearance to land. The wind was reported to the aircraft at that stage as 300°, 25-30 knots and the weather as continuous rain. The aircraft was observed to make its approach over the slag bank to the south-east of the airfield; one witness stated that as it crossed Walney Channel the aircraft was lower than normal. The passenger in the right hand pilot seat states that the approach appeared normal; the landing lights were on and the left hand wind screen wiper was operating and he could see the runway sodium lights ahead. He was next aware of a sudden increase in engine power and looking ahead, he saw that the runway lights ha disappeared from view. He then saw some trees illuminated by the landing lights and immediately afterwards felt the aircraft's impact with the ground. When the aircraft failed to appear on the runway, the tower operator ordered the emergency services to search the approach end of runway 30. Some difficulty was experienced in locating the aircraft which had crashed below aerodrome level into the west bank of Walney Channel and was out of view. It was only when one of the passengers had extricated himself from the wreckage and climbed the bank, that the aircraft was found. There was no fire, but the aircraft was substantially damaged. The pilot received fatal injuries, and two o the passengers, including the one in the right hand pilot's seat were seriously injured.
Probable cause:
The accident was caused by the pilot allowing his aircraft to undershoot whilst making a difficult approach to a poorly lit runway in adverse weather conditions. Tiredness, lack of food, and poor visual accommodation were probably contributory factors. The effect of carbon monoxide in the pilot's blood may also have been a contributory factor. The following findings were reported:
- The approach to runway 30 at night in adverse weather conditions demanded an abnormally high degree of concentration and awareness due to the insufficiency of runway lights and a lack of glide slope guidance.
Final Report:

Crash of a Piper PA-31-310 Navajo in Tallahassee: 3 killed

Date & Time: Nov 17, 1976 at 2238 LT
Type of aircraft:
Operator:
Registration:
N50BB
Flight Phase:
Survivors:
No
Schedule:
Tallahassee - Fort Lauderdale
MSN:
31-323
YOM:
1968
Crew on board:
1
Crew fatalities:
Pax on board:
2
Pax fatalities:
Other fatalities:
Total fatalities:
3
Captain / Total flying hours:
3000
Circumstances:
After takeoff from Tallahassee Airport, while climbing by night under instruments, the twin engine airplane descended into ground and crashed. The aircraft was destroyed upon impact and all three occupants have been killed.
Probable cause:
Controlled collision with ground during climb to cruise after the pilot failed to maintain a positive rate of climb. The following contributing factors were reported:
- Misread or failed to read instruments,
- Low ceiling (200 feet),
- Fog.
Final Report:

Crash of a Piper PA-31-310 Navajo in Lagos: 1 killed

Date & Time: Oct 4, 1976
Type of aircraft:
Operator:
Registration:
5N-AKQ
Flight Type:
Survivors:
No
MSN:
31-7612051
YOM:
1976
Country:
Region:
Crew on board:
1
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
1
Circumstances:
On final approach to Lagos-Murtala Muhammed Airport, the twin engine airplane crashed in unknown circumstances short of runway. The aircraft was destroyed by a post crash fire and the pilot, sole on board, was killed.

Crash of a Piper PA-31-310 Navajo on Mt Palagyo: 8 killed

Date & Time: Sep 13, 1976 at 1640 LT
Type of aircraft:
Registration:
RP-C769
Flight Phase:
Survivors:
No
Site:
Schedule:
Naga - Manila
MSN:
31-165
YOM:
1968
Country:
Region:
Crew on board:
2
Crew fatalities:
Pax on board:
6
Pax fatalities:
Other fatalities:
Total fatalities:
8
Circumstances:
The twin engine airplane departed Naga Airport at 1524LT on a charter flight to Manila. While descending to Manila-Intl Airport, the crew encountered poor weather conditions with low clouds and thunderstorm activity. The airplane struck the slope of Mt Palagyo located about 42 km northeast of Manila Airport. SAR operations were initiated but the wreckage was located 11 days later only. The aircraft was destroyed upon impact and all eight occupants have been killed, among them Gerhard König, Ambassador of Germany to the Philippines.
Probable cause:
Controlled flight into terrain.