Schweizer 269C N7506A
21 June 1994 · Hillsboro, Oregon, United States · No injuries
Summary
On 21 June 1994 at about 01:00 local time, a Schweizer 269C registered N7506A, operated by Hillsboro Helicopters, Inc., was involved in an accident near Hillsboro, Oregon, United States. 2 people were on board and nobody was injured. The aircraft was substantially damaged. The NTSB has published a probable cause for this accident; it is quoted in full below.
The record
- Date
- at 01:00
- Classification
- Accident
- Location
- Hillsboro, Oregon, United States
- Nearest airport
- Portland-Hillsboro (HIO)
- Coordinates
- 45.4390, -122.9595
- Aircraft
- Schweizer 269C
- Registration
- N7506A
- Category
- Helicopter
- Engines
- 1
- Operator
- Hillsboro Helicopters, Inc.
- Operating rule
- Part 91: General Aviation
- Purpose of flight
- Instructional
- Phase of flight
- Not recorded
- Aircraft damage
- Substantial
- Weather
- VMC
- Light
- Day
- NTSB number
- SEA94LA153
People
Nobody was injured.
| On board | Died | Serious | Minor | Uninjured |
|---|---|---|---|---|
| 2 | 0 | 0 | 0 | 2 |
Probable cause
THE IMPROPER SERVICING OF THE SKID SHOCK STRUTS.
Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.
Read the full NTSB narrative
WHILE EXECUTING A RUN-ON LANDING THE INSTRUCTOR FELT A 'THUMP' AND THE HELICOPTER BEGAN TO OSCILLATE LATERALLY. THE INSTRUCTOR PILOT DIAGNOSED THE PROBLEM AS GROUND RESONANCE, TOOK CONTROL OF THE AIRCRAFT FROM THE STUDENT, CLOSED THE THROTTLE, LOWERED COLLECTIVE, AND THE HELICOPTER DEPARTED THE TAXIWAY. POST CRASH EXAMINATION OF THE SKID SHOCK STRUTS REVEALED THAT ALL FOUR WERE CHARGED AT A PRESSURE LOWER THAN THAT SPECIFIED. THE MAINTENANCE HANDBOOK WARNS THAT IMPROPER SHOCK STRUT PRESSURE LEVELS MAY RESULT IN GROUND RESONANCE AND DESTRUCTION OF THE HELICOPTER.
Quoted verbatim from the NTSB record.
Other Schweizer 269 accidents
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 11 Nov 1994 | Schweizer 269C | Valencia, California, United States | Pacific Shore Aviation | Fatal | 1 |
| 16 May 1994 | Schweizer 269C | Hiram, Georgia, United States | Cangemi, Richard S. | Serious injuries | - |
| 7 Sep 1994 | Schweizer 269C | Grand Forks, North Dakota, United States | - | No injuries | - |
| 8 Apr 1994 | Schweizer 269C | Hebron, Nebraska, United States | Michael Weatherl | Minor injuries | - |
| 21 Apr 1994 | Schweizer 269C | Fargo, North Dakota, United States | - | Minor injuries | - |
| 12 Aug 1995 | Schweizer 269C | Baltimore, Maryland, United States | - | Minor injuries | - |
Other accidents in this area
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 29 Apr 1994 | Cessna 172P | Hillsboro, Oregon, United States | Eagle Flight Center, Inc. | No injuries | - |
| 5 Jun 1994 | Piper PA-38 | Sweet Home, Oregon, United States | - | No injuries | - |
| 6 Jun 1994 | Siai-Marchetti SF.260B | Prospect, Oregon, United States | - | No injuries | - |
| 8 Jun 1994 | Schweizer SGS 1-26D | North Plains, Oregon, United States | Willamette Valley Soaring Club | No injuries | - |
| 21 Jun 1994 | Cessna 150L | Hubbard, Oregon, United States | Cougar Aviation | No injuries | - |
| 27 Jun 1994 | Burkhart Grob G-109B | Bend, Oregon, United States | Central Oregon Soaring Inc. | Fatal | 1 |