- Date
- October 21, 2017, 11:13 local (18:13 UTC)
- Place
- Maricopa, AZ
- Injuries
- 2 serious
- Damage
- Substantial damage
- Phase of flight
- Approach
- Aircraft
- N9239LAmerican AA 1A
- Defining event
- Approach: Controlled flight into terr/obj (CFIT)
- Weather
- Visual (VMC) · Day
- Status
- Completed
- Report
- Approved by Office Director
- Investigation class
- Class 3
- NTSB office
- Western Pacific Region
- Parties
- Federal Aviation Administration
- FAA report
- 20171021021519A
- Case key
- 96224
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.
On this page
Probable cause
The pilot’s failure to see and avoid unmarked power lines during the approach to land.
Findings · 2
NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.
Sequence of events
The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.
Analysis
The pilot was conducting a local personal flight. His son reported that his father was returning to the departure airport when the accident occurred. One witness reported that the airplane “seemed slow and too low” during the approach to land and that it struck power lines near the approach end of the runway. Subsequently, the airplane descended rapidly and impacted the runway. Several other witnesses reported that the airplane impacted unmarked power lines that were above a power line marked with orange guide balls. The pilot did not recall the accident sequence. Postaccident examination of the airplane did not reveal any preaccident mechanical malfunctions or failures that would have precluded normal operation. Given the witness statements, it is likely that, during the approach to land, the pilot allowed the airplane to drop below the glideslope, and he failed to see and avoid the unmarked power lines that were above the marked power line.
Factual narrative
On October 21, 2017, about 1113 mountain standard time, an American Aviation AA-1A airplane, N9239L, was substantially damaged when it was involved in an accident near Maricopa, Arizona. The pilot and passenger were seriously injured. The airplane was being operated as a Title 14 Code of Federal Regulations Part 91 personal flight. The pilot’s son reported that his father was returning to the departure airport when the accident occurred. A witness reported that the airplane “seemed slow and low” during the approach to land and that it then struck power lines. Subsequently, the airplane descended rapidly and impacted the runway, sustaining substantial damage to the right wing and fuselage. Several witnesses reported that the power lines were unmarked and were above a power line marked with orange guide balls. The pilot did not recall the accident. One of the witnesses reported seeing a power line wrapped around the landing gear. Examination of the airplane did not reveal evidence of any preaccident mechanical malfunctions or failures that would have precluded normal operation. Control continuity was established.
Aircraft
- Registration
- N9239L
- Reported as
- American AA 1A
- Category
- Airplane
- Serial number
- AA1A-0139
- Engine
- Lycoming O-235, reciprocating
- Damage
- Substantial damage
- Flight
- Personal · Part 91
- Airworthiness certificate
- Standard, Normal
- Departed
- 2AZ4 · Maricopa, AZ
- Destination
- 2AZ4 · Maricopa, AZ
- Airport
- 2AZ4 · Millar Airport, runway 16, 2,600 × 75 ft, asphalt
- Equipment
- None
Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.
Flight crew
As NTSB recorded them. NTSB leaves out names.
- Role
- Pilot
- Age
- 75
- Injuries
- Serious
- Certificate
- Private
- Airplane ratings
- Single-engine land, Multi-engine land
- Medical
- BasicMed
- Seat
- Left
- Restraint
- 3-point
- Flight hours
- 1 total · 1 in this make and model · 1 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- Calm
- Visibility
- 10 statute miles
- Lowest ceiling
- None
- Temperature
- 75 °F, dew point 45 °F
- Altimeter
- 30.02 inHg
- Observed at
- CHD, 21 nm away
Docket · 5
The files NTSB released with the investigation on January 8, 2021, on NTSB’s docket system: statements, records, photos and specialists’ reports. 6.8 MB in all.
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.