Aircraft Accident/Incident Report

Eagle Pass, Texas 78852
Thursday, January 12, 2006 16:00 CST

NTSB Narrative Summary Released at Completion of Accident

The 1,672 hour commercial pilot departed the operations base near the border on a routine patrol of the Rio Grande River dividing the two countries. Upon reaching the limits of his search area he reversed course to return to home base. On the return leg he decided to search an area where he had noticed two law enforcement airboats operating north of the port of entry. The pilot reported on the Pilot/Operator Accident Report Form (NTSB Form 6120.1/2), that he recalled seeing two sets of power lines on the outbound leg of his patrol. After crossing the first set of power lines and locating the airboats he began a turn to orbit the boats. The pilot added that when he looked up and saw that he was about to hit the second set of wires, he instinctly initiated a cyclic climb to clear the wires; however, the maneuver was initiated too late and the tail rotor impacted the wires resulting in the separation of the tail rotor gear box, tail rotor assembly, and vertical fin. The pilot managed to keep the helicopter in controlled flight and elected to execute an autorotation to a clearing. The helicopter made a successful autorotation and landed upright in the middle of the river, 853 feet from the point of the wire strike. The helicopter came to rest in about 3 feet of water, and the pilot performed an emergency engine shutdown and egressed through the pilot door with assistance from the crews of the airboats.

NTSB Probable Cause Narrative

The pilot's failure to maintain clearance from the unmarked transmission lines. A factor was the pilot's diverted attention while monitoring ground activity.

Event Information

Type of Event Accident
Event Date 1/12/2006
Event Day of the Week Thursday
Time of Event 1600
Event Time Zone Central Standard Time
Event City Eagle Pass
Event State TEXAS
Event Country --
Zipcode of the event site 78852
Event Date Year 2006
Event Date Month 1
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 284304N
Event Location Longitude 1003623W
Event Location Airport --
Event Location Nearest Airport ID --
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles --
Degrees magnetic from airport --
Airport Elevation --
Weather Briefing Completeness --
Investigator's weather source Weather Observation Facility
Time of the weather observation 1540 Central Standard Time
Direction of event from weather observation facility (degrees) 180
Weather Observation Facility ID MMPG
Elevation of weather observation facility 958
Distance of event from weather observation facility (units?) 6
Time Zone of the weather observation CST
Lighting Conditions Day
Lowest Ceiling Height --
Lowest Non-Ceiling Height 16000
Sky/Lowest/Cloud Conditions Scattered
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 7
Air Temperature at event time (in degrees celsius) 26
Dew Point at event time (in degress fahrenheit) 12
Wind Direction (degrees magnetic) --
Variable Wind Indicator Variable
Wind Speed (knots) --
Wind Velocity Indicator Light and Variable
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 29.77
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report --
Event Highest Injury Serious
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal --
Injury Total Minor --
Injury Total None --
Injury Total Serious 1
Injury Total All 1
Investigating Agency NTSB
NTSB Docket Number (internal use) 20099
NTSB Notification Source DHS, Customs Border Patrol
NTSB Notification Date Jan 12 2006 12:00AM
NTSB Notification Time --
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Jul 31 2006 10:47AM
User who most recently changed record NTSB\JOHB
Basic weather conditions Visual Meteorological Cond
FAA District Office San Antonio FSDO

Aircraft Involved

Aircraft #1

Aircraft Registration Number N840BP
NTSB Number DFW06TA054
Missing Aircraft Indicator --
Federal Aviation Reg. Part Public Use
Type of Flight Plan filed Company VFR
Flight plan Was Activated? Yes
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name Aerospatiale
Aircraft Model AS350-B2
Aircraft Series Identifier --
Aircraft Serial Number 2035
Certified Max Gross Weight 4961
Aircraft Category Helicopter
Aircraft Registration Class --
Aircraft is a homebuilt? No
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 6
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Continuous Airworthiness
Date of Last Inspection Jan 1 2006 12:00AM
Airframe hours since last inspection --
Airframe Hours 11150
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name United States Border Patrol Air Operations
Aircraft Owner Street Address 9C Butterfield Trail
Aircraft Owner City El Paso
Aircraft Owner State TX
Aircraft Owner Country USA
Aircraft Owner Zipcode 79906
Operator is an individual? No
Operator Name --
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address --
Operator City --
Operator State --
Operator Country --
Operator Zip code --
Operator Code --
Owner has at least one certificate None
Other Operator of large aircraft? --
Certified for Part 133 or 137 Operation --
Operator Certificate Number --
Indicates whether an air carrier operation was scheduled or not --
Indicates Domestic or International Flight --
Operator carrying Pax/Cargo/Mail --
Type of Flying (Per_Bus / Primary) --
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code KDRT
Departure City Del Rio
Departure State TX
Departure Country USA
Departure Time 1500
Departure Time Zone CST
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code --
Destination City --
Destination State --
Destination Country --
Specific Phase of Flight Maneuvering
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 21 2010 1:42PM
User who most recently changed record gamw
Since inspection or accident Last Inspection
Event Location Runway Number and Location N/A
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --