Crash of a Fairchild F27B in Gambell: 10 killed

Date & Time:
Type of aircraft:
Operator:
Registration:
N4904
Survivors:
Yes
Schedule:
Nome – Savoonga – Gambell
MSN:
21
YOM:
1958
Flight number:
WC099
Location:
Crew on board:
4
Crew fatalities:
Pax on board:
28
Pax fatalities:
Other fatalities:
Total fatalities:
10
Captain / Total flying hours:
6607
Captain / Total hours on type:
4626.00
Copilot / Total flying hours:
2738
Copilot / Total hours on type:
470
Aircraft flight hours:
26068
Circumstances:
Wien Air Alaska Flight 99, a Fairchild F27B , was a regularly scheduled passenger and cargo flight from Nome, Alaska, to Savoonga and Gambell, two villages on St. Lawrence Island, Alaska. The captain's IFR flight plan, as filed with the Nome Flight Service Station (FSS), indicated a route of flight from Nome to Savoonga, via Island Intersection, then to Gambell, with a return to Nome via Island Intersection. The requested altitude was 12,000 feet and the listed alternate airports were Galena and Nome. At 1216, Flight 99 departed Nome and landed at Savoonga at 1306. The aircraft departed Savoonga at 1327 with an estimated time en route of 15 minutes to Gambell. There were 32 persons on board, 28 passengers and 4 crewmembers. When the Wien agent at Gambell heard Flight 99's radio transmissions after takeoff from Savoonga, she activated the Gambell Non Directional Beacon (NDB) . According to the cockpit voice recorder (CVR) transcript, the crew identified the Gambell NDB shortly after departing Savoonga and contacted the Wien agent at Gambell. The crew gave their estimated time of arrival and requested the weather. The agent replied, "Our current weather is partial obscured sky. Visibility 1 to 1/2 miles ... 1 mile to 1/2 mile with ... and fog, Temperature is 47°, wind is calm, altimeter 29.70." Soon thereafter, Flight 99 questioned the visibility; the agent replied that it was, "sometimes about 5 miles, it's very hard to tell..." When the flight arrived in the Gambell area, the captain, who was flying the aircraft, remarked to the first officer that fog appeared to be a problem. He also stated, "We'll take a shot from this way and if we can't make it, we'll come around and hit it from that side. If we can't make it from there, we'll turn out and (come in underneath it)." The pilot then made several attempts to land. According to some surviving passengers, the aircraft descended to a low altitude over the tundra to the south of the airport during one of the approaches. During another of the approaches, ground witnesses saw the aircraft make a low pass down the runway and then a right turn out to sea before it disappeared into the fog. Some of the survivors, including the flight attendant, believed that the aircraft touched down on this approach. The CVR indicates that the crew had the runway in sight but decided to execute a missed approach because they were too far down the runway to land safely. Flight data recorder (FDR) information shows that the aircraft descended to within a few feet of the surface. According to correlated CVR/FDR information, the aircraft then turned right, flew north, and make a relatively steep turn to the right. During this turn, the first officer said that a 155° heading inbound would be perfect. Cockpit conversations during the rollout indicated that the flight passed the NDB while on a heading of 140°. The captain then called for final flaps and landing gear. When last observed by ground witnesses, the aircraft was heading southeast. It flew over a beach and near boat racks located about 240 yards northeast of the NDB. It continued its course and passed over the eastern end of some newly constructed houses just north of Troutman Lake, which is located between the runway and Sevuokuk Mountain. Ground witnesses stated that the landing gear was lowered before they saw the aircraft disappear into the fog. Ground witnesses and survivors of the crash generally agreed that there was a considerable amount of patchy fog in the area and that visibility ranged from 1/4 to 1 1/2 miles. A heading of 140° was maintained for about 28 seconds until the aircraft struck Sevuokuk Mountain at an altitude of 424 feet. Several of the passengers could see the ground and were aware of their position relative to the village of Gambell. Some of them realized that the aircraft was going to hit the mountain and braced themselves. Shortly after the aircraft entered the fog and just before impact, some witnesses and survivors heard an increase in engine sound. The aircraft was destroyed upon impact and three crew members and seven passengers were killed. All other occupants were injured.
Probable cause:
The National Transportation Safety Board determines that the probable cause of this accident was the flight crew's failure to adhere to prescribed company instrument approach procedures while attempting to land in adverse weather conditions. The following findings were reported:
- Weather in the area of the flight was below authorized minimums for an approach,
- The crew did not comply with approved instrument approach procedures during several attempts to land in instrument flight conditions,
- The runway rotating light beacon was no operating.
Final Report:

Crash of a Cessna 401 in Austin: 3 killed

Date & Time:
Type of aircraft:
Operator:
Registration:
N4004Q
Survivors:
No
Schedule:
Dallas - Austin
MSN:
401-0104
YOM:
1968
Crew on board:
1
Crew fatalities:
Pax on board:
2
Pax fatalities:
Other fatalities:
Total fatalities:
3
Captain / Total flying hours:
705
Captain / Total hours on type:
65.00
Circumstances:
While approaching Austin-Robert Mueller Airport runway 12R in a cloud base at 500 feet, the twin engine airplane stalled and crashed in flames onto a house located few miles from the airfield. The aircraft was destroyed and all three occupants were killed. There were no casualties on the ground.
Probable cause:
Stall on final approach because the pilot failed to maintain flying speed. The following contributing factors were reported:
- Attempted operation beyond experience/ability level,
- Improper IFR operation,
- Low ceiling,
- Unqualified person operated aircraft,
- Pilot had no solo time in type of aircraft,
- Two previous approaches completed.

Crash of a Consolidated PBY-6A Catalina in Harlingen: 3 killed

Date & Time:
Type of aircraft:
Operator:
Registration:
N15KL
Flight Phase:
Flight Type:
Survivors:
Yes
Schedule:
Harlingen - Harlingen
MSN:
2070
YOM:
1944
Crew on board:
5
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
3
Captain / Total flying hours:
2200
Circumstances:
Following several technical modifications, among them the replacement of the right engine carburetor, the crew was in charge to conduct a post maintenance test flight. After takeoff, the right engine failed. The right propeller was not feathered and the aircraft stalled and crashed. Three crew members were killed while two others were injured.
Probable cause:
Failure of the right engine after takeoff for undetermined reasons. The following contributing factors were reported:
- The crew failed to follow the approved procedures,
- The crew failed to maintain flying speed,
- Improper emergency procedures,
- Propeller unfeathered, gear down.
Final Report:

Crash of a Boeing 727-224 in Denver

Date & Time:
Type of aircraft:
Operator:
Registration:
N88777
Flight Phase:
Survivors:
Yes
Schedule:
Denver - Wichita
MSN:
19798/608
YOM:
1968
Flight number:
CO426
Crew on board:
7
Crew fatalities:
Pax on board:
124
Pax fatalities:
Other fatalities:
Total fatalities:
0
Captain / Total flying hours:
11465
Captain / Total hours on type:
483.00
Copilot / Total flying hours:
6555
Copilot / Total hours on type:
998
Aircraft flight hours:
23850
Circumstances:
The takeoff from Denver-Stapleton Airport was completed from runway 35L in poor weather conditions. At that time, a thunderstorm with associated rain showers was moving over the northern portion of the airport. The Thunderstorm was surrounded by numerous other thunderstorms and associated rain showers but none of these were in the immediate vicinity of the airport. After liftoff, the airplane reached an altitude of 100 feet then lost about 41 kt of indicated airspeed in 5 seconds. The aircraft struck the ground 11.6 seconds after the airspeed began to decrease. The aircraft first hit the ground 387 feet south of the departure end of runway 35L and 106 feet to the right of the runway centerline. The aircraft continued northward to a second impact area about 135 feet north of the end of the first area. The main portion of the second area was 55 feet long and 4 feet wide. The aircraft slid northward from this area and came to rest about 1,600 feet north of the departure end of runway 35L and about 160 feet to the right of the extended runway centerline. All 131 occupants were evacuated, 15 of them were injured.
Probable cause:
The aircraft's encounter, immediately following take-off, with severe windshear at an altitude and airspeed which precluded recovery level flight; the windshear caused the aircraft to descend at a rate which could not be overcome even though the aircraft was flown at or near its maximum lift capability throughout the encounter. The windshear was generated by the outflow from a thunderstorm which was over the aircraft's departure path.
Final Report:

Crash of a Stinson V-77 Reliant in Cave City

Date & Time:
Type of aircraft:
Registration:
N9360H
Flight Phase:
Flight Type:
Survivors:
Yes
Schedule:
Bowling Green – Chicago
MSN:
77-350
Crew on board:
1
Crew fatalities:
Pax on board:
1
Pax fatalities:
Other fatalities:
Total fatalities:
0
Captain / Total flying hours:
23880
Captain / Total hours on type:
26.00
Circumstances:
En route to Chicago, the pilot encountered engine problems. He elected to make an emergency landing when the aircraft struck a 20 feet deep gully, got airborne again, hit trees and crashed. Both occupants were slightly injured and the aircraft was damaged beyond repair.
Probable cause:
Engine failure in flight after the propeller seal loosened. Oil exhaustion - engine lubrication system. Poor, inadequate design.
Final Report:

Crash of a De Havilland DHC-3 Otter in the Hawk Inlet

Date & Time:
Type of aircraft:
Registration:
N3382
Flight Type:
Survivors:
Yes
Schedule:
Juneau - Hawk Inlet
MSN:
288
YOM:
1958
Crew on board:
1
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
0
Captain / Total flying hours:
7000
Captain / Total hours on type:
101.00
Circumstances:
The pilot, sole on board, was completing a cargo flight from Juneau to Hawk Inlet. While landing in the Hawk Inlet, the single engine airplane overturned, came to rest upside down and sank. The pilot escaped uninjured while the aircraft was damaged beyond repair.
Probable cause:
Nosed over upon landing after the pilot failed to retract the landing gear. The following contributing factors were reported:
- Failed to use the checklist.
Final Report:

Crash of a Rockwell Aero Commander 500A in Valparaiso: 2 killed

Date & Time:
Registration:
N78378
Flight Phase:
Flight Type:
Survivors:
No
Schedule:
Gary - Gary
MSN:
500-1263-86
YOM:
1962
Crew on board:
2
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
2
Captain / Total flying hours:
459
Captain / Total hours on type:
155.00
Circumstances:
The crew departed Gary Airport in the early evening on a local flight. While in normal cruise, the airplane went out of control, entered a dive and crashed in a prairie. The aircraft was totally destroyed and both occupants were killed.
Probable cause:
Loss of control following an improper operation of flight controls on part of dual student. The following contributing factors were reported:
- Inadequate supervision of flight on part of the pilot-in-command,
- Attempted operation beyond experience/ability level,
- Aircraft observed to enter a stall followed by a spin,
- The student log had two previous dual flights, one by a CFI.
Final Report:

Crash of a Cessna 207 Skywagon in Hesperia

Date & Time:
Registration:
N91101
Flight Phase:
Flight Type:
Survivors:
Yes
Schedule:
Hesperia - Big Bear
MSN:
207-0074
YOM:
1969
Crew on board:
1
Crew fatalities:
Pax on board:
5
Pax fatalities:
Other fatalities:
Total fatalities:
0
Captain / Total flying hours:
231
Captain / Total hours on type:
21.00
Circumstances:
After takeoff from Hesperia, the pilot encountered technical problems and elected to make an emergency landing on a hill side when the airplane crashed. The pilot and a passenger were seriously injured while four other occupants were slightly injured. The aircraft was written off.
Probable cause:
Engine failure or malfunction due to inadequate maintenance and inspection. The following contributing factors were reported:
- Foreign material affecting normal operations,
- Fuel contamination - exclusive of water in fuel,
- Fuel systems: filters, strainers, screens obstructed,
- The pilot failed to abort takeoff,
- Overload failure,
- Observers said the engine power not full on takeoff,
- Screen partially clogged by debris.
Final Report:

Crash of a Lockheed C-130A Hercules in Imlay City: 6 killed

Date & Time:
Type of aircraft:
Operator:
Registration:
57-0454
Flight Phase:
Flight Type:
Survivors:
No
Schedule:
Selfridge - Selfridge
MSN:
3161
YOM:
1958
Crew on board:
6
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
6
Circumstances:
The crew departed Selfridge AFB (ANG) for a training mission. While cruising about 45 miles north of Detroit, the crew lost control of the airplane that crashed in an open field located in Imlay City. The aircraft was destroyed and all six crew members were killed.
Probable cause:
A propeller blade separated from the engine n°3 in flight and struck the engine n°4. Control was lost.

Crash of a Rockwell Aero Commander 500B in Red Hill: 2 killed

Date & Time:
Operator:
Registration:
N181Z
Flight Phase:
Flight Type:
Survivors:
No
Schedule:
Atlanta - Atlanta
MSN:
500-1310-122
YOM:
1963
Crew on board:
2
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
2
Captain / Total flying hours:
9535
Captain / Total hours on type:
1446.00
Circumstances:
The crew departed Atlanta for a local training mission. En route, while in normal cruise, the airplane was observed to pitch up and entered a spin. It crashed near Red Hill, killing both pilots.
Probable cause:
Engine failure or malfunction after a failure of the fuel injection system. The following contributing factors were reported:
- Miscellaneous acts, conditions: loose, part/fitting,
- Improper operation of flight controls on part of the student pilot,
- Failed to maintain flying speed,
- Inadequate supervision of flight on part of the pilot-in-command,
- Rough or surging engine heard,
- Not equipped with flight Bob-WT system.
Final Report: