WPR14LA267

NTSB accident investigation · Air Tractor AT 502B · Sacramento, CA · June 23, 2014

Accident · Minor injuriesLimited investigationFinal report
Date
June 23, 2014, 12:00 local (19:00 UTC)
Place
Sacramento, CA
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N61150Air Tractor AT 502B
Defining event
Maneuvering-low-alt flying: Loss of engine power (total)
Weather
Visual (VMC) · Day
Status
Completed · report January 12, 2015
Report
Approved by Office Director
NTSB office
Western Pacific Region
Parties
FAA FSDO
FAA report
20140623013959A
Case key
89533

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 total loss of engine power for reasons that could not be determined because the airplane was not available for postaccident examination.

Findings · 1

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.

Not determinedNot determined › Not determined · Unknown/Not determinedAir Tractor AT-502B: 7 casesAll aircraft: 2,247 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 of the agricultural aerial application flight reported that, while he was returning to base and when the airplane was about 300 ft above ground level, the engine suddenly lost all power. He attempted to land on a road, but the airplane was unable to reach it, so he landed in a flooded field. During the landing, the tailwheel-equipped airplane abruptly stopped and nosed over, which resulted in substantial damage to the fuselage and vertical stabilizer. The pilot reported no preaccident mechanical anomalies with the airplane that would have precluded normal operation. The operator did not provide any aircraft logbooks for examination nor did the operator make the airplane available for examination.

Factual narrative

On June 23, 2014, about 1200 Pacific daylight time, an Air Tractor AT-502B airplane, N61150 sustained substantial damage when it nosed over, during an off-airport landing, following a loss of engine power. The airplane was being operated by Farm Air Flying Service Inc., Sacramento, California, as a visual flight rules (VFR) agricultural aerial application flight under 14 Code of Federal Regulations Part 137. Visual meteorological conditions prevailed, and the solo pilot received minor injuries. The airplane departed a private company airstrip, and company flight following procedures were in effect. During a telephone conversation with the National Transportation Safety Board (NTSB) investigator-in-charge (IIC) on June 24, a company representative said the pilot reported that the engine lost power while maneuvering at a low altitude during a crop spraying operation. He glided the airplane for landing into a rice field, which was submerged under about 10 inches of water with a soft bottom. During the landing, the tailwheel equipped airplane came to an abrupt stop and nosed over. The operator said he would not elaborate further prior to talking directly with the pilot. There were no reported mechanical anomalies prior to the loss of engine power. The airplane sustained substantial damage to the vertical stabilizer and rudder. In a written statement dated September 16, provided by a Federal Aviation Administration inspector, the pilot reported that he was returning to base, about 300 feet above ground level when the engine suddenly lost all power. He said he attempted to glide to a farm road, but unable to reach the road he landed in a flooded field. Following the initial contact with the NTSB IIC, the operator did not return any phone calls or emails from the IIC, and did not submit the NTSB 6120.1 Pilot/Operator Aircraft Accident/Incident Report form as requested. No aircraft logbooks were presented for examination, and the operator did not make the airplane available for examination.

Aircraft

Registration
N61150
Reported as
Air Tractor AT 502B (B)
Category
Airplane
Serial number
502B-0294
Built
1995
Engine
P&W PT6A, turbo prop
Damage
Substantial damage
Flight
Aerial application · Part 137
Operator
Farm Air Flying Service Inc
Registered owner
Farm Air Flying Service Inc
Airworthiness certificate
Standard, Normal
Departed
Sacramento, CA
Destination
Sacramento, CA
Flight plan
Company VFR

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
70
Injuries
None
Certificate
Commercial
Airplane ratings
Single-engine land
Medical
Unknown
Last flight review
March 2, 2014
Seat
Single
Flight hours
18,723 total · 2,230 in this make and model · 250 in the last 90 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
180° at 4 knots
Visibility
10 statute miles
Lowest ceiling
25,000 ft broken
Temperature
84 °F, dew point 46 °F
Altimeter
29.87 inHg
Observed at
SMF

Docket · 3

The files NTSB released with the investigation on November 24, 2014, on NTSB’s docket system: statements, records, photos and specialists’ reports. 373 KB 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.