WPR26LA037

NTSB accident investigation · Grumman American Avn. AA-5B · Santa Ynez, CA · October 30, 2025

Accident · No injuriesClass 3 · LimitedPreliminary report
Date
October 29, 2025, 18:20 local (Oct 30, 2025, 01:20 UTC)
Place
Santa Ynez, CA
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Initial climb
Aircraft
N74323Grumman American Avn. AA-5B
Defining event
Initial climb: Loss of engine power (total)
Weather
Visual (VMC) · Dusk
Status
Investigation ongoing
Investigation class
Class 3
NTSB office
Western Pacific Region
Parties
Federal Aviation Administration
FAA report
20251029016979A
Case key
201956

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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Preliminary report

What NTSB knew early in the investigation. It may change in the final report.

On October 29, 2025, about 1820 Pacific daylight time, a Grumman American AA-5B, N74323, was substantially damaged when it was involved in an accident near Santa Ynez, California. The commercial pilot was not injured. The airplane was operated as a Title 14 Code of Federal Regulations Part 91 personal flight. The pilot stated that the purpose of the flight was to maneuver the airplane within and above the traffic pattern of the airport. The pilot departed from runway 26 and began following the noise-abatement climb-out procedures. During the initial climb, the engine began to operate abnormally and, after about three seconds, experienced a total loss of power. The pilot further stated that he maneuvered the airplane in a shallow turn back toward the airport. He determined that the airplane would be unable to maintain sufficient altitude to return to the runway and began searching for an area to conduct an off-airport landing. He elected to touch down in a vineyard just outside the airport perimeter and secured the cockpit by retarding the mixture to full OFF. During the accident sequence, the airplane collided with grapevines and fence posts, which resulted in substantial damage to the left horizontal stabilizer. According to a Federal Aviation Administration (FAA) inspector who performed an initial examination of the airplane, the fuel tanks were ruptured as a result of the impact. The inspector was able to drain liquid from the inboard fuel tanks, and the recovered sample was clean of debris and similar in odor to fuel. An external examination of the engine revealed no evidence of holes or catastrophic damage. The wreckage was retained for further examination.

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.

Aircraft

Registration
N74323
Reported as
Grumman American Avn. AA-5B
Category
Airplane
Serial number
AA5B-0201
Built
1975
Airframe hours
3,582.4
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Normal
Last inspection
Annual · September 15, 2022 · 31.25 hours before
Destination
Same as departure
Airport
IZA · Santa Ynez/Kunkle Fld
Equipment
Auto-pilot, ADS-B, Stall warning system

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.

Weather

Conditions
Visual (VMC) · Dusk
Wind
260° at 6 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
73 °F, dew point 46 °F
Altimeter
29.97 inHg
Observed at
KIZA
METAR
METAR KIZA 300115Z AUTO 26006KT 10SM CLR 23/08 A2997 RMK AO2=

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.