Molokai

The airplane collided with mountainous terrain after the flight crew terminated the instrument approach and proceeded visually at night. The flight crew failed to brief or review the instrument approach procedure prior to takeoff and exhibited various cognitive task deficiencies during the approach. These cognitive task deficiencies included selection of the wrong frequency for pilot controlled lighting, concluding that the airport was obscured by clouds despite weather information to the contrary, stating inaccurate information regarding instrument approach headings and descent altitudes, and descending below appropriate altitudes during the approach. This resulted in the crew's lack of awareness regarding terrain in the approach path. Pilots approaching a runway over a dark featureless terrain may experience an illusion that the airplane is at a higher altitude that it actually is. In response to this illusion, referred to as the featureless terrain illusion or black hole phenomenon, a pilot may fly a lower than normal approach potentially compromising terrain clearance requirements. The dark visual scene on the approach path and the absence of a visual glideslope indicator were conducive to producing a false perception that the airplane was at a higher altitude. A ground proximity warning device may have alerted the crew prior to impact. However, the amount of advanced warning that may have been provided by such a device was not determined. Although the flight crew's performance was consistent with fatigue-related impairment, based on available information, the Safety Board staff was unable to determine to what extent the cognitive task deficiencies exhibited by the flight crew were attributable to fatigue and decreased alertness.

De Havilland DHC-6, N707PV (Aloha Islandair flight 1712), collided with mountainous/hilly terrain near Halawa Bay, HI, while en route on a scheduled passenger flight at night from Maui to Molokai, HI. Impact occurred at an elevation of about 500 feet, shortly after the aircraft had descended over water, then crossed the shoreline. There was evidence that the captain had made a navigational error and mistakenly believed that he was circumnavigating the northern portion of Molokai Island. The aircraft crashed while on a heading that was parallel with the island's northern shoreline. Low clouds obscured the mountain tops in the area of the accident. There was also evidence of inadequate supervision of personnel, training and operations by Aloha Islandair management and insufficient oversight of Aloha Islandair by the FAA during a period of Aloha Islandair's rapid operational expansion. All 20 occupants were killed.

The flight was to be flown across a 22 mile channel between islands on an overcast night with no moon and no ground reference lights. The aircraft disappeared from radar and, after extensive searches, could not be found. A three dimensional flight track was reconstructed using recorded radar data. The data indicated that in the last 60 seconds the aircraft slowed from 170 to 95 knots, gained 500 feet in altitude, and turned left 190° before abruptly disappearing from radar. Flight tests indicated that the movements of the aircraft in the last 60 seconds of the flight were consistent with a loss of the left engine, without compensation by the pilot. The operator's training program did not provide for night or instrument flight conditions. The last documented instrument time for the pilot was 15 months prior during a checkride. The pilot flew sporadic night flights. The pilot had previously flown during the day and was on his thirteenth hour of duty. The wreckage and all eight occupants were never found. However it is believed it crashed about 13 miles northwest of Maunaloa, on Molokai Island.

After takeoff from Molokai Airport, the pilot encountered control problems and the airplane became unstable. In such conditions, he decided to reduce his altitude and to attempt an emergency landing in a prairie. Upon landing, the airplane slid for several yards before coming to rest. Two passengers were seriously injured while seven other occupants escaped with minor injuries.

En route from Honolulu to Lanai, while cruising along the coast, the twin engine airplane went through a stormy area when control was lost. It crashed into the sea offshore and was destroyed. All eight occupants were killed.

While taxiing at Honolulu Airport, on a flight to Molokai, the pilot-in-command lost control of the airplane that collided with a parked Hawaii Air DC-9 registered N906H. While the DC-9 was slightly damaged, the Viscount was damaged beyond repair and the 14 occupants were uninjured.

The floatplane crashed in unknown circumstances into the sea off Molokai. There were no casualties.
Crew:
Lt Harry P. Leber Jr., pilot.

Both pilots Ernest L. Smith and Emory R. Bronte were engaged in one of the first transpacific nonstop flight from Oakland to Honolulu, taking part to the 'Dole Race' with a price of 25,000 US$. After a flight of 26 hours and 36 minutes, the crew was approaching the coast of Molokai when the engine failed due to fuel exhaustion. The crew made an emergency landing and was uninjured while the aircraft named 'Spirit of Oakland' was damaged beyond repair. As he did not reach Honolulu, the crew was disqualified and did not win the prize.