NYC94LA073 · Burkhart Grob G109B
Burkhart Grob G109B · Accident: loss of control in flight while maneuvering
Event
- NTSB case
- NYC94LA073
- 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
- 0 · 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
- Visual Meteorological Cond
Burkhart Grob G109B
- Aircraft type
- Grob G109
- Category
- Glider
- 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
- N403DW
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From not recordedTo not recorded
- 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 · turn to landing area (emergency)
- 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
- Loss of control in flight
- 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
- Stall; Tree(s)
- DamageDestroyed: beyond practical repair. Substantial: damage that affects the structure, performance or handling and normally needs major repair. Minor: less than that. Glossary
- Substantial
Cause areas
- Dual student › Airspeed, not maintained
- Pilot in command(cfi) › Remedial action, delayed
Approximate · Estimated position: the centre of Nashua, NH, the place the record names. Not the accident site.
NTSB narrative
THIS WAS A TRAINING FLIGHT WITH A CERTIFIED FLIGHT INSTRUCTOR (CFI) AND A RATED STUDENT PILOT (RSP), IN A MOTOR-GLIDER. THE CFI HAD INFORMED THE TOWER CONTROLLERS THAT HE PLANNED TO PRACTICE A SIMULATED ROPE BRAKE AFTER TAKEOFF. AT 525 FEET THE CFI REDUCED THE POWER TO IDLE AND THE RSP INITIATED A 30 DEGREE BANK TO THE RIGHT TO RETURN TO THE RUNWAY. AFTER 120 DEGREES OF TURN, AS THE RSP AND CFI LOOKED OVER THEIR SHOULDERS TOWARD THE RUNWAY, THE RIGHT WING DROPPED AND THE BANK ANGLE INCREASED TO ABOUT 65 DEGREES. THE CFI TOOK THE CONTROLS, LEVELED THE WINGS AND ADDED POWER. THE GLIDER THEN COLLIDED WITH TREES.
Probable cause
THE CERTIFIED FLIGHT INSTRUCTOR'S DELAY IN TAKING REMEDIAL ACTION, WHICH RESULTED IN THE MOTOR-GLIDER COLLIDING WITH TREES.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record NYC94LA073
- Event ID
- 20001206X00992
- Case number
- NYC94LA073
- 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: 678fdf003d5c51d79096f74ac826bc9a87336d172d0d91023f65a6f088312711; retrieved 2026-09-21T22:40:58.050Z.