# NTSB FTW82FA110: Mbb-Bolkow BO-105CBS, N112CF, Mckinney, TX, April 2, 1982

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Field investigation · Final report
- Date: April 2, 1982, 13:09 local (19:09 UTC)
- Place: Mckinney, TX
- Coordinates: 33.17984, -96.590713 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=33.1798&lon=-96.5907&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 3 fatal
- Status: Completed, report April 2, 1983
- Report: Approved by Office Director
- NTSB case key (mKey): 71631
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW82FA110
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/71631/pdf
- Page: https://openairdocs.org/ntsb/FTW82FA110

## Sequence of events

In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf).

- Loss of control - in flight, maneuvering
  - weather condition - unfavorable wind (contributing factor)
  - weather condition - gusts (contributing factor)
  - rotorcraft flight controls - improper use of, pilot in command (cause)
  - lack of total experience in type of aircraft, pilot in command (contributing factor)
- In flight collision with terrain/water, maneuvering

## Analysis

THE ACFT ACCELERATED OVER THE RUNWAY AFTER A 10 SEC HOVER. AFTER ACCELERATION, THE ACFT WENT INTO A NOSE HIGH, STEEP, RIGHT CLIMBING TURN. THE ANGLE OF BANK WAS DESCRIBED AS 45 TO 90 DEG. THE PITCH VARIED FROM 15 DEG UP TO 30 DEG DOWN JUST PRIOR TO IMPACT. MAX ALT WAS ESTIMATED TO BE 75 TO 200 FT AGL. THE NOSE DROPPED THROUGH AFTER 90 DEG OF TURN. THE DESCENDING RIGHT TURN CONTINUED UNTIL GROUND CONTACT. WITNESSES REPORTED THAT A RECOVERY WAS APPRARENTLY STARTED JUST PRIOR TO IMPACT. THIS TYPE OF MANEUVER WAS PREVIOUSLY USED IN DEMONSTRATIONS DURING UPGRADE TRAINING, BUT NOT IN WINDS THAT EXISTED ON THE DAY OF THE ACCIDENT. ACCORDING TO AN MBB REPORT, THE MANEUVER (AS DESCRIBED) WAS CONSIDERED DANGEROUS. NO MALFUNCTIONS OF THE AIRCRAFT WERE FOUND. BOTH PLTS AND VERY LITTLE EXPERIENCE IN THE BO-105. THE ACFT THAT THEY HAD PREVIOUSLY FLOWN HAD A DELAYED CONTROL RESPONSE WHEN COMPARED TO THE INSTANTANEOUS RESPONSE OF THE MBB HINGE ROTOR SYSTEM.

## Aircraft

- Registration: N112CF (not matched to a registry record)
- Reported make and model: MBB-BOLKOW BO-105CBS
- Category: Helicopter
- Serial number: S429
- Airframe hours: 481
- Engines: ALLISON 250-C20B 420 horsepower turbo shaft
- Damage: Destroyed
- Flight: Instructional, Part 91
- Operator: Lone Star Helicopters
- Registered owner: North Central Texas Services
- Departed: DALLAS, TX
- Destination: DALLAS, TX
- Airport: TKI, Mckinney Municipal, runway 17, 4,000 × 75 ft, macadam

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 32; flight instructor, airline transport, commercial; airplane ratings: multi-engine land, single-engine land; instrument ratings: helicopter, airplane; medical: class 1, valid medical--no waivers/lim.; flight hours: 4,100 total, 7 in this make and model, 4,000 as pilot in command, 86 in the last 90 days, 25 in the last 30 days, 2 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 180° at 15 knots
- Visibility: 7 statute miles
- Lowest ceiling: 1,600 ft overcast
- Temperature: 165 °F
- Altimeter: 29.00 inHg
- Observed at: ADS, 10 nm away

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 19820402007789A](https://openairdocs.org/incident/19820402007789A), Apr 2, 1982: Bolkms BO105C, Mckinney, TX, Destroyed, 1 fatal. Helicopter made running takeoff and steep climbing turn continuing until crash 180 degrees from takeoff heading.

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

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