ASN Wikibase Occurrence # 224341
This information is added by users of ASN. Neither ASN nor the Flight Safety Foundation are responsible for the completeness or correctness of this information.
If you feel this information is incomplete or incorrect, you can submit corrected information.
| Date: | Thursday 25 April 2019 |
| Time: | 12:49 LT |
| Type: |  TL Ultralight TL-2000 StingSport |
| Owner/operator: | Private |
| Registration: | N797N |
| MSN: | TLUSA118 |
| Fatalities: | Fatalities: 2 / Occupants: 2 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | near Madera Municipal Airport (KMAE), Madera, CA -
 United States of America
|
| Phase: | Take off |
| Nature: | Training |
| Departure airport: | Fresno, CA (E79) |
| Madera, CA | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The flight instructor and the student pilot were conducting traffic pattern work, landings, and takeoffs. A pilot who was flying in the area reported hearing one of the accident airplane's pilots announce that they would perform an "emergency turn around at 500 ft." Two witnesses listening to communications at the airport reported that the last communication they heard from the accident airplane was that the pilot would be executing a simulated emergency landing to the runway. Data obtained from a GPS unit on board the accident airplane showed that about 1 minute after departure, at a GPS altitude of 764 ft above ground level and a groundspeed of 64 knots, the airplane began a 180° descending right turn back toward the airport. The final recorded data point was 16 seconds later, with a reported GPS altitude of 324 ft and a groundspeed of 21 knots. The airplane impacted terrain in a nose-down attitude about .5 nautical miles from the departure end of the runway. It could not be determined which pilot was manipulating the flight controls when the accident occurred.
Postaccident examination of the airframe and the engine did not reveal any evidence of preexisting mechanical malfunctions that would have precluded normal operation.
Toxicology testing of specimens from the flight instructor detected metoprolol, rosuvastatin, and glipizide, which were not impairing and, thus, would not have contributed to the accident. Toxicology testing of specimens from the student pilot detected tetrahydrocannabinol (THC), the active compound in marijuana. Although the concentration of THC found in cardiac blood suggests that marijuana usage may have occurred earlier that day, blood concentrations do not correlate well with impairment and cannot be used to prove that the user was under the influence of the drug at the time of testing. Thus, it is unlikely that the student pilot's use of marijuana contributed to the accident.
Based on the available evidence, it is likely that during the simulated engine failure on initial climb after takeoff, the pilot inadvertently exceeded the airplane's critical angle of attack, likely by allowing the airspeed to decay, and the airplane experienced an aerodynamic stall at an altitude too low for recovery.
Probable Cause: The pilot's exceedance of the airplane's critical angle of attack during the simulated engine failure on initial climb after takeoff, which resulted in an aerodynamic stall and subsequent loss of control at too low of an altitude to recover.
Accident investigation:
 |
|
Sources:
NTSB WPR19FA121
FAA register: https://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=797N
https://flightaware.com/photos/view/29032-850841b71d3f9252a166eea87f280ae29d814392/aircrafttype/GALX
Location
Media:
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 25-Apr-2019 23:18 | Geno | Added |
| 25-Apr-2019 23:21 | Geno | Updated [Aircraft type, Operator] |
| 25-Apr-2019 23:42 | RobertMB | Updated [Aircraft type, Operator] |
| 26-Apr-2019 05:35 | Geno | Updated [Aircraft type, Registration, Cn, Operator, Source] |
| 26-Apr-2019 13:02 | harro | Updated [Aircraft type] |
| 26-Apr-2019 16:59 | Iceman 29 | Updated [Embed code] |
| 08-Jul-2022 18:13 | ASN Update Bot | Updated [Time, Other fatalities, Nature, Departure airport, Destination airport, Source, Damage, Narrative, Category, Accident report] |
Corrections or additions? ... Edit this accident description
The Aviation Safety Network is an exclusive service provided by:
Quick Links:
| ASN Home | Send Correction / Feedback |
| FSF Home | Disclaimer | Copyright |
| Contact Us | Privacy Policy |
| Press / Media |
CONNECT WITH US:
©2024 Flight Safety Foundation