DFW08LA035 · Ayres S2-R
Chiles Flying Service Ayres S2-R · Accident: loss of engine power en route
From 2F5 · Lamesa, TX to Lenora, TX
Event
- NTSB case
- DFW08LA035
- 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
- Unknown
- 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
Ayres S2-R
- Aircraft type
- Ayres S2
- 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
- N32984
- Operator
- Chiles Flying Service
- Onboard fatalities
- Unknown
- Route
- From 2F5 · Lamesa, TXTo Lenora, 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 137: Agricultural
- 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
- En route · cruise
- 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
- 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
- Bleed air system › Separation
Approximate · Coordinates from the NTSB case API, which marks them as estimated or does not say; no uncertainty radius is established.
NTSB narrative
A single-turbine engine airplane, lost engine power during cruise, and the pilot performed a forced landing. He reported that during cruise flight, "the engine just quit in mid-air". An examination of the airplane on-site revealed structural damage during the forced landing, and fuel was present in the airplane's fuel tanks. After the aircraft had been recovered, a visual inspection of the engine was conducted, and no noticeable reason for the loss of engine power was found. An additional inspection was to be conducted at the engine manufacturer's facility. However, when the mechanics were preparing the engine for removal from the airframe, a line going to the fuel control was found to be loose, and essentially fell apart. The line, identified as the "P3" line, had separated from the AN fitting. Further examination of the fitting/hose identified, sooting or heat marks, on and near the AN fitting, as well as further along the hose. The hose's fire-sleeve covering was removed and revealed, that approximately one-foot of the braided hose had been burnt. According to the engine manufacturer when the engine is running, if the "P3" line is disconnected from the fuel controller, fuel flow to the engine will be at the "sub- idle" condition.
Probable cause
The loss of engine power due to separation of the "P3" line from the engine's fuel control.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record DFW08LA035
- Event ID
- 20080111X00042
- Case number
- DFW08LA035
- 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, coordinates. 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: 0d041aa738508e2925e15229653029ae0374710da967c6237eed62e24a72569f; retrieved 2026-09-22T03:17:55.649Z.