WPR23LA131

NTSB accident investigation · Maule M-4-220C · Santa Ynez, CA · March 18, 2023

Accident · Minor injuriesClass 4 · LimitedFinal report
Date
March 18, 2023, 10:00 local (17:00 UTC)
Place
Santa Ynez, CA · Just off KIZA
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N40635Maule M-4-220C
Defining event
Maneuvering: Fuel starvation
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
Investigation class
Class 4 - Basic report with no Prelim publish
NTSB office
Western Pacific Region
Parties
Federal Aviation Administration
FAA report
20230318003179A
Case key
106915

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 inadequate fuel planning, which resulted in a loss of engine power due to fuel starvation.

Findings · 3

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.

Use of equip/info: use of equip/systemPersonnel issues › Task performance · PilotMaule M-4-220C: 2 casesAll aircraft: 1,391 casesProbable cause
Fluids: fuelAircraft › Fluids/misc hardware · Fluid managementMaule M-4-220C: 4 casesAll aircraft: 1,695 cases
Planning/preparation: fuel planningPersonnel issues › Task performance · PilotMaule M-4-220C: 1 caseAll aircraft: 719 casesProbable cause

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 reported that, while in a climb on the left crosswind leg of the airport traffic pattern, the engine stopped producing power. He made a left turn toward the airport, activated the electric fuel pump, and changed the fuel selector valve position from the left-wing fuel tank to the right-wing fuel tank. Despite the pilot’s attempts, the engine would not restart, and the pilot made a forced landing in a vineyard. The pilot stated that he believes he unported the available fuel in the left tank while in the climbing left-hand turn. The left wing and left elevator were substantially damaged. The pilot reported that there were no preaccident mechanical malfunctions or failures with the airplane that would have precluded normal operation.

Aircraft

Registration
N40635
Reported as
Maule M-4-220C
Category
Airplane
Serial number
2153C
Built
1972
Airframe hours
1,721.2
Engine
Franklin 6H-350-C1, 220 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Hartmann Peter C
Airworthiness certificate
Standard, Normal
Last inspection
Annual · January 7, 2023 · 14 hours before
Destination
Same as departure
Airport
KIZA · Santa Ynez Airport, runway 08/26, 2,800 × 75 ft, asphalt
Equipment
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.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
65
Injuries
Minor
Certificate
Private
Airplane ratings
Single-engine sea, Single-engine land
Instrument ratings
Airplane
Medical
Class 3, With waivers/limitations
Last flight review
January 29, 2023
Seat
Left
Restraint
Lap only
Flight hours
2,031 total · 266 in this make and model · 848 as pilot in command · 17 in the last 90 days · 9 in the last 30 days · 0 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
10 statute miles
Lowest ceiling
None
Temperature
50 °F, dew point 45 °F
Altimeter
30.05 inHg
Observed at
KIZA
METAR
METAR KIZA 181615Z AUTO 00000KT 10SM CLR 10/07 A3005 RMK AO2=

Docket · 3

The files NTSB released with the investigation on June 23, 2023, on NTSB’s docket system: statements, records, photos and specialists’ reports. 4.0 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.

Other investigations on N40635 · 1

Matched to the same aircraft by N-number and date.