ASN Wikibase Occurrence # 294960
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| Date: | Saturday 29 November 2003 |
| Time: | 02:50 LT |
| Type: |  Mbb BK 117 B-2 |
| Owner/operator: | Memorial Hermann Hospital System, Inc. |
| Registration: | N440HH |
| MSN: | 7238 |
| Year of manufacture: | 1991 |
| Total airframe hrs: | 6438 hours |
| Engine model: | Lycoming LTS101-750-B1 |
| Fatalities: | Fatalities: 0 / Occupants: 3 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Conroe, Texas -
 United States of America
|
| Phase: | Unknown |
| Nature: | Ferry/positioning |
| Departure airport: | Houston-David Wayne Hooks Airport, TX (DWH/KDWH) |
| Conroe, TX | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
While maneuvering in dark night conditions in a confined landing zone, the air ambulance helicopter's tail rotor blades struck a tree. After impacting the tree, the pilot felt no vibration in the anti-torque pedals or airframe and landed safely. After landing, the pilot elected to not shut down the aircraft, inspected the tail rotor, and returned to the hospital. While at the hospital he inspected the tail rotor again, with the assistance of the company mechanic on duty, and they decided that the aircraft was airworthy. While performing a preflight inspection on the following day, another pilot discovered the damage on the tail rotor blades. The tail rotor blades were then removed and replaced.
Probable Cause: The pilot's failure to maintain clearance from trees while repositioning in a confined landing zone. Contributing factors were the dark night light conditions and the confined area available to the pilot.
Accident investigation:
 |
|
Sources:
NTSB FTW04LA069
History of this aircraft
Other occurrences involving this aircraft
| 14 July 2005 | N440HH | Memorial Hermann Hospital Systems | 0 | Houston, Texas | |
sub |
| 1 July 2017 | N238BK | Kids Flight | 0 | NE of Perryville, Perry County, MO | |
sub |
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 12-Oct-2022 16:16 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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