Crash of a Douglas C-47B-16-DK in Grenier Field AFB

Date & Time: Apr 24, 1956
Operator:
Registration:
43-49408
Flight Phase:
Flight Type:
Survivors:
Yes
MSN:
15224/26669
YOM:
0
Crew on board:
0
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
During a late-spring snowstorm, the aircraft crashed into a swamp located at the north end of Perimeter Road at Grenier Field AFB, Manchester, after striking the corner of the fire station hangar. The aircraft broke in two while the right wing was sheared off. All occupants, local dignitaries, were injured.

Crash of a Rockwell Aero Commander 520 near Skilak Lake: 6 killed

Date & Time: Apr 9, 1956 at 1000 LT
Operator:
Registration:
N5386N
Flight Phase:
Survivors:
No
Site:
Schedule:
Anchorage – Seward
MSN:
520-7
YOM:
1952
Flight number:
CDV006
Crew on board:
1
Crew fatalities:
Pax on board:
5
Pax fatalities:
Other fatalities:
Total fatalities:
6
Captain / Total flying hours:
7000
Aircraft flight hours:
1136
Circumstances:
The aircraft departed Anchorage international Airport at 0905LT (scheduled time of departure 0845), destination Seward. The flight plan filed with the company by Pilot John Arthur Waide contained the following: Anchorage to Seward VFR via Skilak Lake, airspeed 145 knots, estimated time en route 45 minutes. All fuel tanks were full and the fuel on board was sufficient for six hours. The estimated time for arrival at Seward was 0950. Witnesses saw the airplane flying southeast toward Seward, heard it circle Upper Russian Lake and saw it pass them again flying west-northwest at 0951. At 1255 Flight 6 was still unreported and search and rescue procedures were initiated. On April 10, 1956, at approximately 1400, the wreckage was reported on the south slope of an unnamed mountain east of Skilak Lake at an elevation of approximately 3,000 feet MSL, near latitude 60 degree 24 'N, longitude 150 degree 03'W. The aircraft was destroyed and all six occupants have been killed.
Probable cause:
The Board determines that the probable cause of this accident was the pilot's action in continuing flight during instrument weather conditions on a planned VFR flight through a mountain pass, and striking a mountainside while attempting to climb out. The following findings were reported:
- The gross weight at the time of takeoff exceeded the allowable gross. The weight was properly distributed. The overload was not a factor in the accident,
- At the time of takeoff the weather observations and forecast indicated that VFR flight over the route involved would be extremely marginal. These forecasts were available to the dispatcher and the pilot,
- The dispatching of the flight was at the discretion of the pilot in command. The assistance of the dispatcher in planning the flight was solely advisory in nature,
- Pilot Waide partially traversed a route segment through mountain passes in which conditions of ceiling and visibility were below VFR minimums, and were deteriorating,
- In attempting return through a pass after reversing his course, he lost visual contact and attempted to climb above the terrain,
- During the climb through the clouds the aircraft struck a mountain slope.
Final Report:

Crash of a Douglas C-124C Globemaster II at Travis AFB: 3 killed

Date & Time: Apr 7, 1956
Operator:
Registration:
52-1078
Flight Phase:
Flight Type:
Survivors:
Yes
Schedule:
Travis - Travis
MSN:
43987
YOM:
1952
Crew on board:
7
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
3
Circumstances:
The crew was conducting a post-maintenance test flight. Shortly after takeoff from Travis AFB, while climbing to a height of 100 feet, the aircraft banked left, stalled and crashed in flames. Three crew members were killed while four others were injured. The aircraft was destroyed.
Crew:
1st Lt James Lyman Hayter,
2nd Lt Richard C. Nelson,
2nd Lt Garth L. Tingey,
M/Sgt Russell M. Hobart,
M/Sgt Harold E. Roache, †
M/Sgt Arthur G. Bird, †
S/Sgt Amos H. Kolb. †
Probable cause:
Ailerons and elevators control cables have been changed by mechanics based at Travis AFB and the crew was engaged in a post-maintenance check flight. It is believed that control was lost during initial climb because these cables were incorrectly installed, not adhering to the manufacturer procedures.

Crash of a Boeing B-29 Superfortress near Randolph AFB: 1 killed

Date & Time: Apr 3, 1956 at 1512 LT
Type of aircraft:
Operator:
Flight Phase:
Flight Type:
Survivors:
Yes
Schedule:
Randolph - Randolph
Crew on board:
6
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
1
Circumstances:
The crew was completing a local training flight at Randolph AFB. While flying at low height at a speed of 140 mph, the aircraft struck a 160-foot high telecommunications tower and crashed in a field, bursting into flames. The wreckage was found in Selma, north of the airbase. A crew member was killed while five others escaped uninjured.
Crew:
1st Lt L. R. Hildebrand +5.

Crash of a Boeing 377 Stratocruiser 10-30 off Seattle: 5 killed

Date & Time: Apr 2, 1956 at 0810 LT
Type of aircraft:
Operator:
Registration:
N74608
Flight Phase:
Survivors:
Yes
Schedule:
Seattle – Portland – Chicago – New York
MSN:
15954
YOM:
1949
Flight number:
NW002
Crew on board:
6
Crew fatalities:
Pax on board:
32
Pax fatalities:
Other fatalities:
Total fatalities:
5
Captain / Total flying hours:
14030
Captain / Total hours on type:
1557.00
Copilot / Total flying hours:
7297
Copilot / Total hours on type:
1143
Aircraft flight hours:
18489
Circumstances:
Flight 2 was scheduled daily between Seattle, Washington. and New York, New York, with intermediate stops at Portland, Oregon, and Chicago., Illinois. It departed Seattle-Tacoma Airport at 0806 on an IFR flight plan to Portland, Oregon, via Victor Airway 23 to cruise at 6,000 feet. There were 32 passengers arid a crew of six consisting of Captain Robert Reeve Heard, First Officer Gene Paul Johnson, Flight Engineer Carl Vernon Thomsen, Flight Service Attendant David V. Razey, Senior Stewardess Elinor A. Whitacre. and Junior Stewardess Dorothy L. Oetting. Takeoff was made on runway 20 and the flight climbed to an altitude of 1,000 to 1,200 feet. At this time power reduced and the wing flaps which had been set at the normal 25-degree takeoff position, were retracted at an airspeed of 145 knots. Immediately the crew became aware of severe buffeting and a strong tendency of the aircraft to roll to the left. Because the buffeting began almost immediately after the flaps ware retracted, the captain believed that it was due to a split-flap condition, i. e., the wing flaps on one side of the aircraft being retracted while the flaps on the other side remained partially or fully down. Power was reduced momentarily in an attempt to alleviate the buffeting but this was not effective and maximum continuous power was again restored. After being cleared by the Seattle tower for return the captain decided not to turn the aircraft because of control difficulty and advised that he would proceed to McChord Air Force Base at Tacoma. Thereafter, the captain testified the trouble became worse and the aircraft continued to lose altitude. The captain elected to ditch and did so at approximately 0810. Touchdown was on smooth water at an airspeed of approximately 120 knots and there was no abrupt deceleration. Passengers and crew members, except the captain and first officer, left the aircraft through the main cabin door and emergency exits. The captain and first officer, after a passenger count, left the aircraft through cockpit windows and swam to the left and right wings, respectively. The aircraft sank in approximately 15 minutes and by that time all persons on the wings had been supplied with buoyant cushions from the cabin seats. Those who survived were rescued by surface craft from the 42-degree F. water within 30 to 35 minutes from the time of ditching.
Probable cause:
The Board determines that the probable cause of the accident Was the incorrect analysis of control difficulty which occurred on retraction of the wing flaps as a result of the flight engineer's failure to close the engine cowl flaps - the analysis having been made under conditions of great urgency and within an extremely short period of time available for decision. The following findings were reported:
- Two minutes after takeoff an emergency was declared because of severe buffeting and control difficulty,
- The flight engineer did not close the cowl flaps to takeoff position,
- The cause of the buffeting and control difficulty was not determined by the flight crew and the captain made a decision to ditch the aircraft in Puget Sound,
- The ditching was made under favorable circumstances. The aircraft sank in about 15 minutes and all survivors were rescued from the water shortly thereafter,
- The aircraft was recovered from aver 400 feet of water and examination disclosed that all engine cowl flaps were approximately full-open,
- The buffeting and control difficulty was caused by the improper setting of the engine cowl flaps,
- There was no failure or malfunction of the aircraft, the powerplants, or control systems prior to the ditching.
Final Report:

Crash of a Martin 404 in Pittsburgh: 22 killed

Date & Time: Apr 1, 1956 at 1920 LT
Type of aircraft:
Operator:
Registration:
N40403
Flight Phase:
Survivors:
Yes
Schedule:
Pittsburgh – Harrisburg – Reading – Allentown – Newark
MSN:
14103
YOM:
1951
Flight number:
TW400
Crew on board:
3
Crew fatalities:
Pax on board:
33
Pax fatalities:
Other fatalities:
Total fatalities:
22
Captain / Total flying hours:
12000
Captain / Total hours on type:
2200.00
Copilot / Total flying hours:
7145
Copilot / Total hours on type:
204
Aircraft flight hours:
9177
Circumstances:
Flight 400 was regularly scheduled between Pittsburgh, Pennsylvania, and Newark, New Jersey, with stops at Harrisburg. Reading. and Allentown, Pennsylvania. Captain Raymond F. McQuade, First Officer Harlan V. Jesperson, and Hostess Vary Jane Fanning, comprised the crew. Prior to departure the pilots were briefed on the en route weather and received the sequence and forecast reports. Although the en route weather was generally good the night was dispatched to Newark on an IFR flight plan via airways as is customary. Upon departure the gross weight of the aircraft was 41,822 pounds (the certificated allowable takeoff gross is 44,900 pounds and TWA's own limit is 43.,650 pounds) and the center of gravity of the loaded aircraft was located within the prescribed limits. Scheduled departure time was 1915; the flight asked for and received taxi clearance at 1916, was then given the wind as calm, and was cleared to runway 23. Takeoff clearance was requested and granted at 1919. About one minute later tower personnel observed a seemingly normal takeoff and initial climb immediately followed by a left turning descent, crash, and erupting fire just beyond the southwest boundary of the airport. Passengers extricated themselves from the jumbled wreckage through and ahead of the fire as best they could; some helped others while a few found themselves thrown out through tears and rents in the shattered fuselage. Although airport based fire fighting equipment was dispatched with no loss of tune some 20 minutes elapsed before it reached the site because of the necessity of traversing circuitous country lanes. Once there, the conflagration, which by that time had nearly consumed the wreckage, was quickly smothered. The stewardess and 21 passengers were killed while 14 other occupants were injured. The aircraft was totally destroyed.
Probable cause:
The Board determines that the probable cause of this accident was uncoordinated emergency action in the very short time available to the crew, which produced an airplane configuration with unsurmountable drag. The following findings were reported:
- At the time of the first power reduction the first officer saw the left engine zone 1 fire warning light come on and retarded the left throttle to a point where autofeathering was deactivated,
- The first officer then reached for the left manual feathering button but was dissuaded from using it by the captain, who, not knowing that the autofeathering was inoperative, attempted futilely to obtain it by pulling back the left mixture to idle cutoff,
- This action did not comply with the emergency procedures prescribed by the carrier for powerplant fire or failure,
- Although these were not the most desirable procedures, compliance without delay would have feathered the left propeller,
- The windmilling left propeller, the extended landing gear, and the takeoff flaps produced sufficient drag to make the airplane lose altitude and strike the ground,
- The cause of the fire warning was a failed exhaust connector clamp in the left engine which triggered an adjacent fire detecting unit,
- After the accident the carrier revised its emergency procedures for powerplant fire or failure.
Final Report:

Crash of a Convair T-29B at Dobbins AFB: 2 killed

Date & Time: Mar 20, 1956
Type of aircraft:
Operator:
Flight Type:
Survivors:
No
Schedule:
Harlingen – Dobbins – New York
Crew on board:
2
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
2
Circumstances:
The crew was performing a flight from Harlingen AFB, Texas, to New York with an intermediate stop at Dobbins AFB, Georgia. The accident occurred in unclear circumstances, killing both crew members, Cpt Cecil Bryant and 1st Lt Donald Carillo.

Crash of a Boeing B-50D-80-BO Superfortress in Wilmington Pike: 11 killed

Date & Time: Feb 27, 1956
Type of aircraft:
Operator:
Registration:
48-072
Flight Phase:
Flight Type:
Survivors:
No
Schedule:
Wright-Patterson - Wright-Patterson
MSN:
15881
YOM:
1948
Location:
Crew on board:
11
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
11
Circumstances:
While conducting a training mission out from Wright-Patterson AFB, the airplane crashed in unknown circumstances in Wilmington Pike, southeast of Dayton. All 11 occupants were killed.

Crash of a Boeing KC-97 Stratotanker in West Palm Beach: 5 killed

Date & Time: Feb 21, 1956 at 1630 LT
Type of aircraft:
Operator:
Flight Type:
Survivors:
No
Schedule:
West Palm Beach - West Palm Beach
Crew on board:
5
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
5
Circumstances:
The crew departed West Palm Beach at 1345LT for a local training mission. After completing several maneuvers, the crew was returning to his base when, on final approach, at a speed of 142 knots, the four engine aircraft struck a 42-foot high light pole. It continued for 660 feet, lost its both wings, broken in two and eventually crashed in a field. All five crew members were killed.
Crew:
Cpt Andrew B. Smernis, pilot,
Cpt Earl Wellington Meredith, Jr., copilot,
2nd Lt Thomas Dee McLeod, copilot,
T/Sgt William Edward McDeid, flight engineer,
M/Sgt John Harold James, panel engineer.
Probable cause:
The investigation would conclude the fault lay not with the crew. It was an in-flight fire; not in an engine, but in the area of the left wing's leading edge.

Crash of a Vickers 744 Viscount in Chicago

Date & Time: Feb 20, 1956 at 0811 LT
Type of aircraft:
Operator:
Registration:
N7404
Survivors:
Yes
Schedule:
Detroit – Chicago
MSN:
90
YOM:
1955
Flight number:
CA141
Crew on board:
4
Crew fatalities:
Pax on board:
38
Pax fatalities:
Other fatalities:
Total fatalities:
0
Captain / Total flying hours:
17752
Captain / Total hours on type:
610.00
Copilot / Total flying hours:
5539
Copilot / Total hours on type:
53
Aircraft flight hours:
1541
Circumstances:
Capital Airlines flight 141 of February 20, 1956, originated at Willow Run Airport, Detroit, Michigan, and was a regularly scheduled flight to Chicago. The crew consisted of Captain Roger Harrison Taylor, First Officer George Richard Hanst and Stewardesses Jacqueline V. Sadowski and Gloria Galloway. Captain R. E. Gilliland, the fifth assigned crew member, was deadheading to Chicago and rode in the passenger cabin. Following a weather briefing, which included a review of en route and terminal weather forecasts, a VFR flight plan was filed. Departure from Detroit was at 0700. The gross takeoff weight of the air- craft was 54,701 pounds, which was below the specified limit; the load was distributed properly with respect to the center of gravity of the aircraft. The flight to the vicinity of Chicago was routine. Near Chicago Flight 141 reported to the Chicago tower that it was over the shoreline. The flight later reported passing Kedzie and was cleared to land on runway 31R. The flight was observed to make a right turn to final approach and appeared to descend in a normal manner until over the west side of Cicero Avenue (the eastern boundary of the airport) at an altitude of 25 to 50 feet above the ground. At this point the airplane appeared to decelerate and descend rapidly. The aircraft was further observed to strike the ground in a slightly nose-up attitude several hundred feet short of the threshold of threshold of the runway, and the top of the fuselage was seen to break open adjacent to the wing spar to fuselage attachment. As the aircraft proceeded down the runway the landing gear retracted and the aircraft then slid on its belly until it came to rest to the left of the runway, 1,626 feet beyond the point of initial impact. All occupants left the aircraft through emergency exits or the main cabin door. The fire department, having been called by tower personnel, arrived at the scene before all persons had evacuated the aircraft. However, there was no fire. The Chicago weather at 0720 was reported as: Sky clear, visibility 6 miles; smoke; wind north-northwest.
Probable cause:
The Board determines that the probable cause of this accident was a malfunctioning of the propeller control switches which culminated in an abrupt loss of lift. The following findings were reported:
- Three of the four landing gear actuated switches, which are located on the landing gear also struts and which effect operation of the propeller, were found to have been capable of malfunctioning by jamming, sticking, or freezing,
- No periodic inspection for internal examination of these switches had been established by the company prior to the accident,
- At least two of the tending gear actuated switches malfunctioned, making it possible for the 21-degree pitch stops to be withdrawn, and consequently ineffective,
- The crew failed to see the 21-degree pitch warning light on, and, therefore, they did not actuate the emergency switch,
- During the final stage of the approach at Chicago, the propellers moved to the ground fine pitch range,
- When the first officer saw three of the 17-degree pitch warning lights come on, he advanced all four throttles quickly,
- The rapid advance of the throttles caused the propeller governor control to move the propeller blades to the four-degree pitch position, thereby creating both propeller drag and loss of wing lift.
Final Report: