Date & Time: Aug 3, 1935 at 1255 LT
Type of aircraft:
Douglas DC-2
Operator:
Registration:
NC13722
Flight Phase:
Flight
Survivors:
Yes
Schedule:
Los Angeles – Albuquerque – Amarillo – Kansas City – Columbus – Pittsburgh – Newark
MSN:
1248
YOM:
1934
Flight number:
TW006
Crew on board:
2
Crew fatalities:
0
Pax on board:
9
Pax fatalities:
0
Other fatalities:
0
Total fatalities:
0
Circumstances:
Left Albuquerque at 1231LT and climb to 9,300 feet. While the crew was trying to change the fuel feed to the left auxiliary tank, the left engine failed. Shortly later, the right engine failed as well. Crew reduced his altitude and elected to make an emergency landing, but unfortunately, the aircraft was cruising over a wooded area. Eventually, the aircraft hit tree tops and crashed in a rocky field located some 48 kilometers east from Albuquerque. All eleven occupants were injured while the aircraft was damaged beyond repair. The failure of the engines was found to be due to the presence of a large amount of water in the 80 octane fuel with which the plane had been serviced at Albuquerque. A check of the fuel storage system at Albuquerque disclosed that on 5000 gallon underground tank contained about 200 gallons of water. After extensive tests, it was found that with a certain amount of water in the fuel pit, pumping fuel from the underground storage tank would cause water to syphen from the fuel pit into the tank through an air vent running between the two. On the afternoon of the preceding day there had been an unusual amount of rainfall which had flooded the concrete apron and filled the fuel pit with water.
Probable cause:
It is the opinion, of the Accident Board that the probable cause of this accident was an abnormal amount of water in the left main fuel tank of the aircraft due to accidental entry of water into an underground fuel storage. The manner in which water got into this underground tank was very unusual and immediate steps were taken on all air lines to prevent a recurrence.