Accident Mbb BK 117 B-2 N440HH,
ASN logo
ASN Wikibase Occurrence # 294960
This information is added by users of ASN. Neither ASN nor the Flight Safety Foundation are responsible for the completeness or correctness of this information. If you feel this information is incomplete or incorrect, you can submit corrected information.

Date:Saturday 29 November 2003
Time:02:50 LT
Type:Silhouette image of generic BK17 model; specific model in this crash may look slightly different    
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
Location:Conroe, Texas -   United States of America
Phase: Unknown
Departure airport:Houston-David Wayne Hooks Airport, TX (DWH/KDWH)
Destination airport: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:
Investigating agency: NTSB
Report number: FTW04LA069
Status: Investigation completed
Duration: 6 months
Download report: Final report



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:

12-Oct-2022 16:16 ASN Update Bot Added

Corrections or additions? ... Edit this accident description

The Aviation Safety Network is an exclusive service provided by:
Quick Links:

CONNECT WITH US: FSF on social media FSF Facebook FSF Twitter FSF Youtube FSF LinkedIn FSF Instagram

©2024 Flight Safety Foundation

1920 Ballenger Av, 4th Fl.
Alexandria, Virginia 22314