CEN24LA229

NTSB accident investigation · Aero Commander S2R · White, SD · June 13, 2024

Accident · Minor injuriesClass 4 · LimitedFinal report
Date
June 13, 2024, 15:55 local (20:55 UTC)
Place
White, SD · Open field
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N1746SAero Commander S2R
Defining event
Maneuvering-low-alt flying: Birdstrike
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
Investigation class
Class 4 - Basic report with no Prelim publish
NTSB office
Central Region
Parties
FAA Rapid City FSDO
FAA report
20240613005769A
Case key
194490

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

A low-level collision and engine ingestion with ducks, which resulted in a total loss of engine power, a forced landing, and a subsequent nose over.

Findings · 5

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.

Object/animal/substance: animal(s)/bird(s)Environmental issues › Physical environment · Effect on equipmentAero Commander S2R: 1 caseAll aircraft: 358 casesProbable cause
Engine (turbine/turboprop)Aircraft › Aircraft power plant · FailureAero Commander S2R: 1 caseAll aircraft: 67 casesProbable cause
Engine (turbine/turboprop)Aircraft › Aircraft power plant · Damaged/degradedAero Commander S2R: 1 caseAll aircraft: 67 casesProbable cause
Object/animal/substance: animal(s)/bird(s)Environmental issues › Physical environment · Contributed to outcomeAero Commander S2R: 1 caseAll aircraft: 358 casesProbable cause
Use of equip/info: aircraft controlPersonnel issues › Task performance · PilotAero Commander S2R: 5 casesAll aircraft: 9,295 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 he was performing a low-level aerial application flight, applying liquid chemical to a rural pasture. As the airplane was climbing out of the pasture, a flock of ducks flew in front of the airplane at about 30 ft agl. Several seconds later, the turboprop engine quit producing thrust. The pilot checked the engine gauges to verify the total loss of engine power, he moved the power lever forward, and he performed a forced landing from about 80 ft agl to a grass field straight ahead. An emergency hopper dump was not performed prior to landing. During the landing, the airplane’s main landing gear sunk into the wet ground. The airplane nosed over and came to rest inverted. The pilot egressed from a broken window on the left-side of the cockpit, as the right-side cockpit door was jammed from the mud. The airplane sustained substantial damage to the engine mount, fuselage, empennage, and the right wing. Prior to the collision and engine ingestion with ducks, the operator reported there were no preimpact mechanical malfunctions or failures with the airframe or the engine that would have precluded normal operation. Postaccident examination confirmed the duck remains were from a Mallard (Anas platyrhynchos), which is classified as a large dabbling duck. Deoxyribonucleic acid (DNA) gender-typing confirmed that both male and female Mallard remains were found in the wreckage.

Aircraft

Registration
N1746S
Reported as
Aero Commander S2R (NO SERIES)
Category
Airplane
Serial number
1446R
Built
1968
Airframe hours
11,798
Engine
Honeywell TPE331-6, 840 horsepower, turbo prop
Damage
Substantial damage
Flight
Aerial application · Part 137
Operator
Wilde Air Service LLC, doing business as Wilde Air Service LLC
Registered owner
Wilde Air Service LLC
Airworthiness certificate
Special, Restricted (Special)
Last inspection
Annual · May 1, 2024 · 59 hours before
Departed
BKX · Brookings, SD
Equipment
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
39
Injuries
Minor
Certificates
Commercial, Flight instructor
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 2, Without waivers/limitations
Last flight review
May 22, 2024
Seat
Single
Restraint
4-point
Flight hours
5,496.3 total · 1,757.1 in this make and model · 5,239.5 as pilot in command · 60 in the last 90 days · 60 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
320° at 10 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
81 °F, dew point 48 °F
Altimeter
29.98 inHg
Observed at
KBKX, 13 nm away
METAR
KBKX 132056Z AUTO 32010KT 10SM CLR 27/09 A2998 RMK AO2 SLP153 T02670089 51012

Docket · 7

The files NTSB released with the investigation on August 22, 2024, on NTSB’s docket system: statements, records, photos and specialists’ reports. 14.6 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.