FTW97FA121 · MBB BO-105S
Petroleum Helicopters MBB BO-105S · Accident: in flight encounter with weather while maneuvering
From HLUS · Shreveport, LA to Lafayette Regional Airport (LFT)
Event
- NTSB case
- FTW97FA121
- Event typeAccident: someone killed or seriously injured, or the aircraft substantially damaged (NTSB definition). Incident: an occurrence that affected or could have affected safety, short of that. Glossary
- Accident
- InvestigationHow far the investigation had got when the record was published: preliminary, ongoing, final or completed. Unknown where the source does not say. Glossary
- Completed
- API-reported fatalities
- 1 · all aircraft and ground
- Ground fatalities
- 0
- OperationWhat kind of flying it was, grouped by the rules it flew under: airline (US Part 121), air taxi and commuter (Part 135), general aviation (Part 91 and similar), military or government. Glossary
- General aviation
- WeatherVisual meteorological conditions (VMC): good enough to fly by looking outside. Instrument conditions (IMC): cloud or low visibility, flying by instruments. Glossary
- Instrument Meteorological Cond
MBB BO-105S
- Aircraft type
- MBB BO-105
- Category
- Helicopter
- RegistrationThe aircraft's tail number, such as N12345 or G-ABCD. Registrations are reissued, so the same one years apart can be a different aircraft. Glossary
- N7161J
- Operator
- Petroleum Helicopters
- Onboard fatalities
- Unknown
- Route
- From HLUS · Shreveport, LATo Lafayette Regional Airport (LFT), Lafayette, LA
- Aircraft age
- Not recorded
- Flight rulesThe regulations the flight operated under: in the US, Part 91 (general aviation), Part 121 (airlines), Part 135 (air taxi and commuter) and others; for flights abroad, the NTSB's coarser commercial or non-commercial code. Glossary
- Part 91: General Aviation
- Phase of flightThe stage of the flight when things started to go wrong: standing, taxi, takeoff, initial climb, en route, maneuvering, approach or landing. Glossary
- Maneuvering
- First occurrenceThe single coded event the NTSB judges best describes what happened (records from 2008 on). Older records name the first occurrence in the sequence instead. Glossary
- In flight encounter with weather
- Also codedOther events the NTSB coded in the sequence, such as a wire strike after a loss of power. Flight Findings uses them for its kinds of event. Glossary
- Visual flight rules (VFR) flight into instrument meteorological conditions (IMC)
- DamageDestroyed: beyond practical repair. Substantial: damage that affects the structure, performance or handling and normally needs major repair. Minor: less than that. Glossary
- Destroyed
Cause areas
- Pilot in command › Spatial disorientation
- Pilot in command › VFR flight into imc, continued
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
During a dark night flight from Shreveport, Louisiana, to Lafayette, Louisiana, via Alexandria, Louisiana, the helicopter descended to 500 feet MSL due to weather, and was following Interstate 49 south over the northbound lanes. The pilot slowed the helicopter to 70 knots keeping pace with the traffic. The medical crewmember remembered 'feeling a shudder, like the shudder as the helicopter decelerates through effective translational lift.' He heard the pilot say an expletive and felt the helicopter begin to turn left. He saw sparks overhead and felt plexi glass hit him. Subsequently, the helicopter impacted the ground. During this sequence he lost visual orientation of the helicopter's position in relation to the ground. According to the company's Operations Manual, during nighttime hours, the air ambulance cross country VFR minimum ceiling is 1,000 feet and the minimum visibility is 3 miles. Any flight outside the local flying area is considered a cross-country operation. The medical crewmember reported that the ceiling was about 550 to 600 feet, and the visibility was approximately 2 miles. Examination of the helicopter did not reveal any structural or mechanical anomalies.
Probable cause
The pilot's continued VFR flight into instrument meteorological conditions, and his subsequent loss of aircraft control due to spatial disorientation. Factors were the pilot not following company procedures and directives, the low ceiling, and the dark night light condition.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record FTW97FA121
- Event ID
- 20001208X07518
- Case number
- FTW97FA121
- Dataset
- historical-pre2008
- Source SHA-256
- 89e2df6d848e7ab3b42e7d7c7a03ff403303057a26ca04c95b3ea67201c3ce74
Source notes (4)
- Unreviewed is an editorial label, not an investigation status. API-sourced is not report-checked or human-reviewed. Explicit event totals are used without summing aircraft injury tables; onboard allocation is withheld. Unknown values remain unknown. The operation category is mapped from the NTSB-reported FAR part and has not been reviewed.
- Filled from the NTSB case API where the bulk record had no value: investigation status. Values present in the bulk record are kept.
- The date is the local date, which is the same as the UTC date the NTSB stores.
- API snapshot SHA-256: 93f994f5aa5c54dc2b46bbc632d78345b7af914d496e25f4ec9fb3050739f917; retrieved 2026-09-20T23:01:48.742Z.