Lake LA-4-200-EP N8521Z
12 April 1989 · Bellevue, Washington, United States · Fatal
Summary
On 12 April 1989 at about 17:45 local time, a Lake LA-4-200-EP registered N8521Z, operated by Lake Aircraft, was involved in an accident near Bellevue, Washington, United States. 2 people were on board and 2 died. The aircraft was destroyed. The NTSB has published a probable cause for this accident; it is quoted in full below.
The record
- Date
- at 17:45
- Classification
- Accident
- Location
- Bellevue, Washington, United States
- Coordinates
- 47.6096, -122.2094
- Aircraft
- Lake LA-4-200-EP
- Registration
- N8521Z
- Category
- Airplane
- Engines
- 1
- Operator
- Lake Aircraft
- Operating rule
- Part 91: General Aviation
- Purpose of flight
- Instructional
- Phase of flight
- Not recorded
- Route
- Renton → Unknown
- Aircraft damage
- Destroyed
- Weather
- VMC
- Light
- Day
- NTSB number
- SEA89FA068
People
2 people died.
| On board | Died | Serious | Minor | Uninjured |
|---|---|---|---|---|
| 2 | 2 | 0 | 0 | 0 |
Probable cause
LOSS OF ENGINE POWER FOR AN UNDETERMINED REASON AND FAILURE OF THE INSTRUCTOR PILOT (CFI) TO MAINTAIN CONTROL OF THE AIRCRAFT, WHICH RESULTED IN A STALL/SPIN.
Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.
Read the full NTSB narrative
THE INSTRUCTOR PLT (CFI) HAD BEEN TRAINING THE STUDENT, WHO WAS A CERTIFICATED PLT, BUT NOT SEAPLANE RATED. WITNESSES RPRTD THAT AS THE ACFT DEPARTED LAKE SAMMAMISH, THE ENG MADE UNUSUAL SOUNDS, THEN IT BECAME SILENT. ONE WITNESS RPRTD HESAW THE AIRPLANE SPINNING IN A FLAT ATTITUDE. AN INVESTIGATION REVEALED NO PREIMPACT PART FAILURE, BUT DURING A TEST, THE SPARK PLUGS WOULD NOT FIRE CONTINUOUSLY AT THE MIMIMUM ALLOWABLE OPERATIONAL PRESSURE. THE ACFT HAD BEEN EQUIPPED WITH AN EXTENDED PROPELLER HUB IN ACCORDANCE WITH STC #SA4NE. THIS MODIFICATION EXTENDED THE PROPELLER REARWARD BY 4 INCHES. THE ACFT HAD FLOWN 255 HRS SINCE IT WAS LAST INSPECTED.
Quoted verbatim from the NTSB record.
Other Lake LA-4 accidents
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 21 Oct 1989 | Lake LA-4 | Apalachicola, Florida, United States | D'alemberte, Talbot S. | Minor injuries | - |
| 3 Sep 1989 | Lake LA-4-200 | Orlando, Florida, United States | - | No injuries | - |
| 14 Jun 1988 | Lake LA-4-200 | Wantagh, New York, United States | - | Serious injuries | - |
| 4 Jul 1988 | Lake LA-4 | Linden, New Jersey, United States | Walter FIL | No injuries | - |
| 16 Jul 1988 | Lake LA-4-200 | Candlewood Lake, Connecticut, United States | James A.marquis | Minor injuries | - |
| 30 Jul 1988 | Lake LA-4-200 | Montpelier, Vermont, United States | - | Serious injuries | - |
Other accidents in this area
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 18 Nov 1989 | Ercoupe (Eng & Research Corp ) 415D | Vancouver, Washington, United States | - | No injuries | - |
| 18 Nov 1989 | Cessna 140 | Amboy, Washington, United States | Larry Cahoon | No injuries | - |
| 21 Nov 1989 | Cessna 172 | Bremerton, Washington, United States | Flight Tech, Inc | Minor injuries | - |
| 29 Nov 1989 | Cessna A-185-F | Seattle, Washington, United States | - | No injuries | - |
| 29 Nov 1989 | Hiller UH-12E | Raymond, Washington, United States | Glacier Helicopters | No injuries | - |
| 11 Dec 1989 | Aero Commander 600 S-2D | Walla Walla, Washington, United States | - | No injuries | - |