Aerospatiale AS-350B N249HS

Summary

On 25 December 1989 at about 15:30 local time, a Aerospatiale AS-350B registered N249HS was involved in an accident near Grand Prairie, Texas, 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.

Date

25 December 1989 at 15:30

Classification

Accident

Location

Grand Prairie, Texas, United States

Nearest airport

Municipal (F67)

Coordinates

Not recorded

Aircraft

Aerospatiale AS-350B

Registration

N249HS

Category

Helicopter

Engines

1

Operator

Not recorded

Operating rule

Part 91: General Aviation

Purpose of flight

Personal

Phase of flight

Not recorded

Aircraft damage

Substantial

Weather

VMC

Light

Day

NTSB number

FTW90LA044

Nobody was injured.

MANUFACTURER'S FAILURE TO PROPERTY INSTALL THE LEFT SIDE COMPONENTS OF THE DUAL CONTROL SYSTEM FOLLOWING ITS REMOVAL FOR ADDITIONAL COMPLETION WORK PRIOR TO DELIVERY OF THE AIRCRAFT. CONTRIBUTING TO THE ACCIDENT WAS THE FAILURE OF QUALITY CONTROL PERSONNEL TO DETECT THE OVERSIGHT.

Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.

Read the full NTSB narrative

INITIAL LIFTOFF AND HOVER WERE NORMAL, HOWEVER, AS THE PILOT, WHO WAS FLYING FROM THE LEFT SEAT, WAS PREPARING TO TAKEOFF, HIS CYCLIC DISCONNECTED AND CAME OUT OF THE FLOOR MOUNT. THE PILOT YELLED TO THE RATED PASSENGER TO TAKE THE CYCLIC AND HE LOWERED COLLECTIVE WHILE ATTEMPTING TO MAINTAIN DIRECTIONAL CONTROL WITH THE PEDALS. THE AIRCRAFT SUBSEQUENTLY LANDED HARD IN A TAIL LOW ATTITUDE, SEVERING THE TAILBOOM. INVESTIGATION REVEALED THAT THE 'PIP' PIN WHICH NORMALLY SECURED THE CYCLIC TO THE CONTROL MOUNT WAS MISSING AND NOT FOUND. EXAMINATION OF THE COMPONENTS DID NOT REVEAL ANY EVIDENCE OF WORKING, ELONGATION, OR DAMAGE IN THE HOLES WHERE THE PIN WOULD HAVE NORMALLY BEEN INSTALLED. AUDIT OF THE MAINTENANCE RECORDS OF THE AIRCRAFT, WHICH HAD BEEN DELIVERED FROM THE MANUFACTURER 2 DAYS PRIOR TO THE ACCIDENT, REVEALED THAT THE DUAL CONTROLS HAD RECENTLY BEEN INSTALLED AND INSPECTED AT THE FACTORY.

Quoted verbatim from the NTSB record.