LAX08LA024 · North Wing Mustang II 17.5
North Wing Mustang II 17.5 · Accident: airframe, component or system failure
From New Jerusalem Airport (1Q4) to New Jerusalem Airport (1Q4)
Event
- NTSB case
- LAX08LA024
- 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
- 1 · 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
North Wing Mustang II 17.5
- Aircraft type
- North Wing MUSTANG II 17 5
- Category
- Weight-Shift
- 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
- UNREG
- Operator
- Paul M. Splan · private individual
- Onboard fatalities
- Unknown
- Route
- From New Jerusalem Airport (1Q4), Tracy, CATo New Jerusalem Airport (1Q4), Tracy, CA
- 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
- Unknown
- 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
- Airframe, component or system failure
- 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
- Wing › Collapsed
- Wing, bracing wire › Disconnected
Approximate · Coordinates from the NTSB case API, which marks them as estimated or does not say; no uncertainty radius is established.
NTSB narrative
No witnesses observed the pilot depart on the flight or the accident sequence. The pilot owned and operated the unregistered airplane. Based upon an examination of the accident site and wreckage, the airplane experienced an in-flight non-mechanical structural failure, which resulted in a loss of wing rigidity. The airplane impacted the ground in an uncontrolled descent. All major structural airframe and engine components were accounted for at the site. The leading edges of the wings were mostly undamaged, indicating they folded prior to impact. A propeller chunk was found imbedded in a strut, indicating crankshaft rotation under torque during the accident sequence as the wings folded. Hardware associated with the pullback shackle (assembly), which provides structural support to the wings for rigidity, was missing. The wings were found folded inward from their normal in-flight rigid position. Specifically, a bolt, horseshoe shackle, and the nylon strap were missing. Because these components were not located, no determination could be made regarding whether the bolt had failed, the nut had become loose, or the parts had been inadequately modified following their manufacture. The airplane did not meet the requirements of FAR Part 103, and night flying was not permissible under FAA regulation. Toxicology revealed evidence of tetrahydrocannabinol and tetrahydrocannabinol carboxylic acid (marihuana) in blood samples.
Probable cause
Failure or disconnection of a wing support/brace assembly for undetermined reasons during an undetermined phase of flight.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record LAX08LA024
- Event ID
- 20071105X01727
- Case number
- LAX08LA024
- Dataset
- historical-pre2008
- Source SHA-256
- 89e2df6d848e7ab3b42e7d7c7a03ff403303057a26ca04c95b3ea67201c3ce74
Source notes (5)
- 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: local date, investigation status, coordinates. Values present in the bulk record are kept.
- The date is the local date; the NTSB stores the UTC date 2007-10-26.
- API snapshot SHA-256: c77b2f52d38ebfc85a9d817a49db13fa1b666ec479b8eb819610b121bb3db2bd; retrieved 2026-09-20T16:10:16.714Z.
- Corrected after a review of the NTSB narrative and the aircraft's make and model, which establish these values: aircraft category. North Wing Mustang II 17.5 is a weight-shift (trike); the manufacturer builds nothing else. The NTSB MDB codes it AIR (Airplane), which is how the aircraft was registered rather than what it is.