Beechcraft H18S N2990F
8 September 1983 · Kailua-Kona, Hawaii, United States · Serious injuries
Summary
On 8 September 1983 at about 19:34 local time, a Beechcraft H18S registered N2990F was involved in an accident near Kailua-Kona, Hawaii, United States. 10 people were on board and one was seriously injured, 9 had minor injuries. The aircraft was destroyed. No probable cause statement is available for this record.
The record
- Date
- at 19:34
- Classification
- Accident
- Location
- Kailua-Kona, Hawaii, United States
- Nearest airport
- Keahole (KOA)
- Coordinates
- Not recorded
- Aircraft
- Beechcraft H18S
- Registration
- N2990F
- Category
- Airplane
- Engines
- 2
- Operator
- Not recorded
- Operating rule
- Part 135: Air Taxi & Commuter
- Purpose of flight
- Unknown
- Phase of flight
- Not recorded
- Aircraft damage
- Destroyed
- Weather
- VMC
- Light
- Day
- NTSB number
- LAX83LA427
People
1 person was seriously injured.
| On board | Died | Serious | Minor | Uninjured |
|---|---|---|---|---|
| 10 | 0 | 1 | 9 | 0 |
Probable cause
The NTSB has not published a probable cause for this record. No probable cause statement is present in the source data.
Nothing about the cause is stated here that is not in the source record.
Read the full NTSB narrative
ABOUT 1 MIN AFTER TAKEOFF, BETWEEN 400-500 FT MSL & DURING THE FIRST POWER REDUCTION, THE RIGHT ENG BACKFIRED. FOLLOWINGSOME MORE VIOLENT BACKFIRES THE RPM WENT TO ZERO. THE RIGHT ENG WAS RESTARTED BUT THE SAME RESULT OCCURRED. THE PLT ATTEMPTED TO FEATHER THE RIGHT PROP BUT TO NO AVAIL. THE ACFT WAS THEN DELIBERATELY DITCHED TO AVOID AN OUTCROPPING OF LAVA. THE ACFT CAME TO REST IN ABOUT 25-30 FT OF WATER. ENG INSPECTION REVEALED THAT THE #2 CYLINDER EXHAUST ROCKER ARM SHAFT, P/N45937, WAS MISSING. DRIVE TRAIN CONTINUITY WAS ESTABLISHED WITH THE EXCEPTION OF THE #2 EXHAUST VALVE. CENTRIFUGAL STOPS PREVENT FEATHERING OF THE PROP BELOW AN ENG SPEED OF 500 RPM.
Quoted verbatim from the NTSB record.
Other Beechcraft H18S accidents
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 17 Jul 1984 | Beechcraft H18S | Honolulu, Hawaii, United States | - | No injuries | - |
| 27 Sep 1981 | Beechcraft H18S | Gillette, Wyoming, United States | Green MGT Corp | Minor injuries | - |
| 9 Jan 1981 | Beechcraft H18S | Chicago, Illinois, United States | ACE Air Cargo | No injuries | - |
| 19 Oct 1979 | Beechcraft H18S | Covington, Kentucky, United States | Burlington Air | No injuries | - |
| 11 Apr 1974 | Beechcraft H18S | Hilo, Hawaii, United States | Island Air * | Fatal | 11 |
| 21 Dec 1972 | Beechcraft H18S | Bloominton, Illinois, United States | Williams Paten | Fatal | 2 |
Other accidents in this area
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 29 Jun 1983 | Douglas DC-4-C55B | Kahului, Hawaii, United States | - | No injuries | - |
| 31 May 1983 | Piper PA-28-181 | Molokai, Hawaii, United States | Nubb Aire | No injuries | - |
| 23 Jul 1983 | Beechcraft C-45G | Kahalui, Hawaii, United States | - | Minor injuries | - |
| 24 Mar 1983 | Murrayair MA1B | Nr Lihue Arpt, Hawaii, United States | - | Fatal | 1 |
| 3 Apr 1983 | Grumman American AA-5B | Waimanalo, Oahu, Hawaii, United States | - | Fatal | 1 |
| 22 Oct 1983 | Robinson R22 | Kailua-Kona, Hawaii, United States | - | No injuries | - |