CHI95LA228 · Reed RS15
Reed RS15 and Piper PA-25-150 · Accident: loss of control on ground/water during takeoff
Event
- NTSB case
- CHI95LA228
- 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
Aircraft 1 · Reed RS15
- Aircraft type
- Reed RS15
- 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
- N964
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From Ames Municipal Airport (AMW)To 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
- Takeoff · roll/run
- 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 on ground/water
- DamageDestroyed: beyond practical repair. Substantial: damage that affects the structure, performance or handling and normally needs major repair. Minor: less than that. Glossary
- Destroyed
Aircraft 2 · Piper PA-25-150
- Aircraft type
- Piper PA-25
- 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
- N6084Z
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From Ames Municipal Airport (AMW)To 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
- Initial climb
- 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
- 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
- Flight control, ruddervator attachment › Not secured
- Pilot in command › Aircraft preflight, inadequate
- Pilot in command › Glider/tow release, not used
- Pilot in command › Stall, inadvertent
- Pilot of other aircraft › Glider/tow release, not used
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
THE GLIDER PILOT STATED THAT AFTER HE COMPLETED HIS PREFLIGHT IN PREPARATION FOR LAUNCH, HE SECURED HIMSELF IN THE GLIDER AS THE TOW ROPE WAS CONNECTED. HOWEVER, HE COULD NOT RECALL ANY OF THE EVENTS THAT FOLLOWED, CONCERNING THE TAKEOFF ROLL OR ACCIDENT. THE TOW PILOT REPORTED THAT AFTER THE GLIDER WAS HOOKED UP TO THE TOW PLANE, A SIGNAL WAS PROVIDED TO BEGIN THE TAKEOFF ROLL. WITNESSES STATED THAT AS THE TOW AIRPLANE BEGAN THE TAKEOFF ROLL, THE GLIDER WAS HAVING DIRECTIONAL CONTROL PROBLEMS. THE TOW AIRPLANE LIFTED OFF AND CLIMBED ABOUT 50 TO 60 FEET ABOVE THE GROUND. THE TOW PILOT SAID THAT AT ABOUT THAT TIME, HE NOTED EXCESSIVE DRAG AND THE TOW AIRPLANE'S TAIL WAS PULLED DOWN DESPITE HIS USE OF FULL FORWARD ELEVATOR. SUBSEQUENTLY, THE GLIDER CARTWHEELED AND FLIPPED OVER, THE TOW ROPE FAILED, AND THE TOW AIRPLANE STALLED AND IMPACTED THE GROUND. POSTACCIDENT EXAMINATION REVEALED THE GLIDER'S RIGHT RUDDERVATOR WAS LOOSE AND WAS NOT PROPERLY CONNECTED TO THE PUSH-PULL TUBE. THE GLIDER PILOT STATED THAT HE DID NOT RECALL, BUT HE PROBABLY DID NOT DO A POSITIVE CONTROL CHECK OF THE RUDDERVATORS BEFORE THE LAUNCH. A WITNESS SAID HE OBSERVED THE GLIDER PILOT CLIMB INTO THE GLIDER'S COCKPIT AND WORK THE CONTROL STICK TO VERIFY AILERON AND RUDDERVATOR CONTROL, BUT HE DID NOT DO A POSITIVE CONTROL CHECK DURING HIS PREFLIGHT.
Probable cause
The glider pilot's inadequate preflight of the glider by failing to properly secure a push-pull tube to the glider's right ruddervator; and failure of both the glider pilot and the tow pilot to release the tow rope, which led to a stall of the tow airplane.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record CHI95LA228
- Event ID
- 20001207X03901
- Case number
- CHI95LA228
- 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: 6ab95f4a3d5406187d0b7a155bddfc24e18d1aaeedd36ac8dce21623ae301f51; retrieved 2026-09-21T13:11:15.092Z.