FTW98LA058 · Gulfstream-Schweizer G-164B
Gulfstream-Schweizer G-164B · Accident: loss of control in flight during initial climb
From PG&E Livermore Training Center Heliport (LA22) to an unrecorded destination
Event
- NTSB case
- FTW98LA058
- 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
Gulfstream-Schweizer G-164B
- Aircraft type
- Gulfstream Schweizer G-164
- 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
- N2LU
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From PG&E Livermore Training Center Heliport (LA22)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
- 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
- Electrical system, battery › Loose part/bolt/nut/clamp/etc
- Electrical system, battery › Not secured
- Flt control syst, elevator control cable/rod › Jammed
- Pilot in command › Maintenance, installation, improper
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
During the initial climb, at about 50 to 75 feet AGL, the instructor noticed that the airspeed was decaying, and he recalled telling the student several times to push forward on the controls. As the aircraft began to descend, the instructor took control of the airplane, and attempted to push forward on the controls, but the controls would not move forward. Subsequently, the airplane crossed over a power line, impacted a pecan tree, and came to rest on the right wing in an upright position. During wreckage examination, all flight controls responded and moved the flight control surfaces through their respective full operating ranges. A battery cover was found laying free beside the elevator control push tube. There were several rub marks on the end of the push tube at the 'thru' bolt end. Also, the battery cover had two small indentations on it, and the battery appeared to be new. No attachment bolts that would have been needed to secure the cover to the battery were found. An annual inspection had just been completed on the aircraft 4 days before, and total time since the annual inspection was 5 hours.
Probable cause
a loose battery cover, due to improper installation by maintenance personnel, that became jammed with an elevator control rod and restricted the movement of the elevator control system, which subsequently led to an uncontrolled impact with a tree, shortly after lift-off.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record FTW98LA058
- Event ID
- 20001208X09183
- Case number
- FTW98LA058
- 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: 0110d5c14127bd3b5eaeea6ef5acb1cc330ce71f86b08e39693f86a3db61bb43; retrieved 2026-09-21T11:44:07.206Z.