GENERAL INFORMATION FOR NTSB REPORT: ANC00LA055
Data Source |
NTSB AVIATION ACCIDENT/INCIDENT DATABASE |
NTSB Report Nbr |
ANC00LA055 |
Event Id |
20001212X20934 |
Local Date |
05/05/2000 |
Local Time |
1400 |
State |
AK |
Event Type |
ACCIDENT |
Injury Severity |
NONE |
Record Status |
FINAL |
Mid Air Collision |
NO |
Event Location |
OFF AIRPORT/AIRSTRIP |
WEATHER INFORMATION
Weather Briefing Complete |
NOT PERTINENT |
Basic Weather Conditions |
VISUAL METEOROLOGICAL COND |
Light Condition |
DAY |
Cloud Condition |
SCATTERED |
Cloud Height above Ground Level (ft) |
4700 |
Ceiling Height above Ground Level (ft) |
7500 |
Cloud Type |
OVERCAST |
Visibility RVR (ft) |
0 |
Visibility RVV (sm) |
0 |
Visibility (sm) |
50 |
Wind Direction (deg) |
0 |
Wind Condition Flag |
V |
Wind Speed (knots) |
0 |
Wind Condition Indicated |
Light and Variable |
AIRCRAFT INFORMATION
Aircraft 1
Type of Operation |
PART 91: GENERAL AVIATION |
Registration Number |
N49686 |
Aircraft Make |
BELL |
Aircraft Model |
206 |
Aircraft Series |
B |
Aircraft Damage |
SUBSTANTIAL |
Aircraft Fire |
NONE |
Aircraft Explosion |
NONE |
Aircraft Type |
HELICOPTER |
Aircraft Homebuilt |
UNKNOWN |
Phase of Flight |
LANDING |
Aircraft Use |
POSITIONING |
Flight Plan Filed |
COMPANY VFR |
Operator Name |
COASTAL HELICOPTERS INC |
Operator Doing Business As |
|
Owner Name |
COASTAL HELICOPTERS, INC. |
Number of Seats |
5 |
Number of Engines |
1 |
ELT Installed |
YES |
ELT Operated |
NO |
Departure Airport Id |
JNU |
Departure City |
JUNEAU |
Departure State |
ALASKA |
Last Departure Point |
NO |
Destination Local |
DEST & DEPARTURE SAME, ACCIDENT CAN OCCUR ANYWHERE |
Destination Airport Id |
|
Destination City |
|
Runway Id |
0 |
Air Carrier Operating Certificates |
YES |
Air Carrier Other Operating Certificates |
UNKNOWN |
Rotocraft/Agriculture Operating Certificate |
EXTERNAL LOAD |
Cert Max Gross Wgt |
3200 |
ENGINE INFORMATION
Aircraft 1 - Engine : #1
Engine Manufactuer
| Allison |
Engine Model
| 250-C20 |
Engine Horsepower
| 425 |
Engine Thrust
| HP |
INJURY INFORMATION
Injury Summary for Aircraft 1
|
Fatal |
Serious |
Minor |
None |
Crew |
0 |
0 |
0 |
0 |
Pass |
0 |
0 |
0 |
0 |
Total |
0 |
0 |
0 |
1 |
Sequence of Events for Aircraft 1
Occurrence #1 UNDERSHOOT
Phase of Operation: LANDING
Events Sequence for Occurrence #1 of Aircraft 1
Event Seq # |
Event Group Code |
Subject |
Modifier |
Personnel |
Cause/Factor |
1 |
2 |
PROPER TOUCHDOWN POINT |
NOT ATTAINED |
PILOT IN COMMAND |
CAUSE |
Occurrence #2 ON GROUND/WATER ENCOUNTER WITH TERRAIN/WATER
Phase of Operation: LANDING
Events Sequence for Occurrence #2 of Aircraft 1
Event Seq # |
Event Group Code |
Subject |
Modifier |
Personnel |
Cause/Factor |
1 |
1 |
ROTOR SYSTEM, TAIL ROTOR BLADE |
BLADE STRIKE |
|
|
AIRCRAFT 1 PRELIMINARY REPORT
On May 5, 2000, about 1400 Alaska daylight time, a high skid, pop-out float equipped Bell 206B helicopter, N49686, sustained substantial damage while landing, about 20 miles southeast of Haines, Alaska, at latitude 58 degrees, 55 minutes north, and longitude 135 degrees, 11 minutes west. The helicopter was being operated as a visual flight rules (VFR) positioning flight under Title 14, CFR Part 91, when the accident occurred. The helicopter was operated by Coastal Helicopters Inc., Juneau, Alaska. The solo certificated commercial pilot was not injured. Visual meteorological conditions prevailed, and a company flight plan was in effect. The flight originated at the Juneau International Airport, Juneau, about 1325.
During a telephone conversation with the National Transportation Safety Board investigator-in-charge on May 5, the pilot reported that she was landing on an elevated landing platform, at a remote radio repeater site. She said that after landing, as she retarded the throttle to the flight idle position, the helicopter began to shake violently, and tip backwards. She added that she opened the throttle in an attempt to restore rotor rpm, but the helicopter continued to tip backwards, and the tail rotor blades struck the ground. The helicopter sustained substantial to the tail rotor gearbox assembly, and vertical fin.
According to a Federal Aviation Administration (FAA) operations inspector, Juneau Flight Standards District Office on May 5, the pilot stated to him that after she had an opportunity to think about the events surrounding the accident, she felt that she had landed the helicopter with the rear skid cross-tube over the aft edge of the elevated platform.
AIRCRAFT 1 FINAL REPORT
The certificated commercial helicopter pilot was landing on an elevated landing platform. After landing, as the throttle was retarded to the flight idle position, the helicopter began to shake violently, and tip backwards. The pilot opened the throttle in an attempt to restore rotor rpm, but the helicopter continued to tip backwards, and the tail rotor blades struck the ground. The helicopter sustained substantial to the tail rotor gearbox assembly, and vertical fin. According to a FAA operations inspector, the pilot stated to him that after she had an opportunity to think about the events surrounding the accident, she felt that she had landed the helicopter with the rear skid cross-tube over the aft edge of the elevated platform.
AIRCRAFT 1 CAUSE REPORT
The pilot's failure to attain a proper touchdown point.
END REPORT