Hughes 269B N9375S
25 May 1994 · Toulon, Illinois, United States · Minor injuries
Summary
On 25 May 1994 at about 23:30 local time, a Hughes 269B registered N9375S, operated by Dwain Webster, was involved in an accident near Toulon, Illinois, United States. 2 people were on board and 2 had minor injuries. The aircraft was destroyed. The NTSB has published a probable cause for this accident; it is quoted in full below.
The record
- Date
- at 23:30
- Classification
- Accident
- Location
- Toulon, Illinois, United States
- Nearest airport
- Dwain Webster Farm
- Coordinates
- 41.0895, -89.8604
- Aircraft
- Hughes 269B
- Registration
- N9375S
- Category
- Helicopter
- Engines
- 1
- Operator
- Dwain Webster
- Operating rule
- Part 91: General Aviation
- Purpose of flight
- Unknown
- Phase of flight
- Not recorded
- Aircraft damage
- Destroyed
- Weather
- VMC
- Light
- Day
- NTSB number
- CHI94LA175
People
2 people had minor injuries.
| On board | Died | Serious | Minor | Uninjured |
|---|---|---|---|---|
| 2 | 0 | 0 | 2 | 0 |
Probable cause
the improper reassembly of the main rotor blade dampers and the underservicing of the landing gear skid hydraulic struts which resulted in ground resonance of the helicopter when the first takeoff after reassembly was attempted.
Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.
Read the full NTSB narrative
THE HELICOPTER HAD BEEN REASSEMBLED AFTER AN ANNUAL INSPECTION, WITH INSTALLATION OF 3 OVERHAULED MAIN ROTOR BLADES. THE MAIN ROTOR BLADE DAMPERS HAD BEEN DISASSEMBLED, INSPECTED AND REASSEMBLED. DURING REASSEMBLY, THE INTERNAL SEQUENCE OF FRICTION DISCS WAS INCORRECT, RESULTING IN IMPROPER AND NON- UNIFORM DAMPING ACTION BETWEEN THE BLADES. THE SHOCK STRUT OLEOS WERE NOT SERVICED. POST ACCIDENT INSPECTION REVEALED LOW PRESSURE IN THE 3 REMAINING INTACT STRUTS. DURING THE FIRST TAKEOFF AFTER REASSEMBLY TO TRACK THE MAIN ROTOR BLADES IN A HOVER, THE HELICOPTER ENCOUNTERED GROUND RESONANCE AND WAS DESTROYED.
Quoted verbatim from the NTSB record.
Other Hughes 269 accidents
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 10 Oct 1994 | Hughes 269C | Livingston, Texas, United States | - | No injuries | - |
| 2 Mar 1994 | Hughes 269C | Merced, California, United States | William C. Moore | Minor injuries | - |
| 8 Nov 1994 | Hughes 269A | Monticello, Arkansas, United States | Ark-la-Tex Helicopters, Inc. | No injuries | - |
| 14 May 1994 | Hughes 269A | Aripeka, Florida, United States | Pasco County Sheriff's Dept. | Unknown | - |
| 1 Aug 1994 | Hughes 269A | Leander, Louisiana, United States | - | No injuries | - |
| 2 Nov 1994 | Hughes 269C | Garden City, Kansas, United States | - | Unknown | - |
All 1,213 records for this type
Other accidents in this area
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 16 Jul 1994 | Piper PA-28-140 | Kankakee, Illinois, United States | Koerner Aviation, Inc. | Minor injuries | - |
| 17 Jul 1994 | Cessna 150 | Alton, Illinois, United States | - | No injuries | - |
| 19 Apr 1994 | Remote Sensing CIRRUS VK-30 | Lk In the Hills, Illinois, United States | - | Fatal | 2 |
| 22 Jul 1994 | Cessna 175 | Cottage Hill, Illinois, United States | - | Serious injuries | - |
| 15 Jul 1994 | Piper PA-22 | Harvard, Illinois, United States | Edwin D. Swart | No injuries | - |
| 5 Jul 1994 | Hucke Ronald L PARSON-2P | Monmouth, Illinois, United States | - | Minor injuries | - |