DEN91LA032 · Piper PA-28-140
Piper PA-28-140 · Accident: loss of engine power on approach
From Glad Oaks Airport (2XS3) to Scholes International At Galveston Airport (GLS)
Event
- NTSB case
- DEN91LA032
- 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
Piper PA-28-140
- Aircraft type
- Piper PA-28
- Category
- Airplane
- 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
- N32108
- Operator
- Joseph Mock
- Onboard fatalities
- Unknown
- Route
- From Glad Oaks Airport (2XS3), Cypress, TXTo Scholes International At Galveston Airport (GLS), Galveston, TX
- 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
- Approach · VFR pattern base
- 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 engine power
- 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/mush
- 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
- Aircraft performance, climb capability › Exceeded
- Pilot in command(cfi) › Remedial action, delayed
- Pilot in command(cfi) › Stall/mush, inadvertent
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
THE FLIGHT INSTRUCTOR REDUCED POWER TO IDLE TO SIMULATE AN ENGINE FAILURE, AND TOLD HIS STUDENT TO DEMONSTRATE A FORCED LANDING AT THE WEST HOUSTON LAKESIDE AIRPORT. THE STUDENT SAID WHILE HE WAS HALFWAY THROUGH THE DOWNWIND LEG, HE WANTED TO TURN TOWARDS THE RUNWAY BUT THE INSTRUCTOR TOLD HIM TO CONTINUE. AFTER HE TURNED ON BASE LEG, THEY OBSERVED AN AIRPLANE UNDER TOW NEAR THE RUNWAY THRESHOLD. THE INSTRUCTOR TOOK CONTROL OF THE AIRPLANE AND ATTEMPTED TO GO AROUND. FULL POWER WAS APPLIED. THE INSTRUCTOR SAID THE AIRPLANE 'DID NOT DEVELOP ANY LIFT.' LAST OBSERVED AIRSPEED WAS 63 MPH AND THE STALL WARNING LIGHT WAS 'FLICKERING.' THE AIRPLANE STRUCK A TREE AND CRASHED IN AN OPEN FIELD.
Probable cause
THE FLIGHT INSTRUCTOR'S DELAY IN TAKING REMEDIAL ACTION, HIS INADVERTENTLY ALLOWING THE AIRPLANE TO STALL, AND EXCEEDING THE AIRCRAFT'S CLIMB PERFORMANCE. FACTORS WERE: THE FLIGHT INSTRUCTOR'S LACK OF EXPERIENCE IN AIRCRAFT TYPE, HIS LACK OF EXPERIENCE AS A FLIGHT INSTRUCTOR, AND EXCEEDING THE AIRPLANE'S MAXIMUM CERTIFICATED GROSS WEIGHT.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record DEN91LA032
- Event ID
- 20001212X16308
- Case number
- DEN91LA032
- 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: 8c6a1c3988adf198d951e484d4f5013252bc158f358e5a1a73766d79a94b674a; retrieved 2026-09-21T15:32:11.728Z.