CEN23LA335

NTSB accident investigation · Piper PA-25-235 · Tyler, MN · July 28, 2023

Accident · No injuriesClass 4 · LimitedFinal report
Date
July 28, 2023, 11:02 local (16:02 UTC)
Place
Tyler, MN
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Initial climb
Aircraft
N7094ZPiper PA-25-235
Defining event
Initial climb: Loss of control in flight
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-FSDO
FAA report
20230728008879A
Case key
192748

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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Probable cause

The pilot’s improper flap position during takeoff, which resulted in degraded climb performance and a collision with terrain.

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.

Action: incorrect action selectionPersonnel issues › Action/decision · PilotPiper PA-25-235: 1 caseAll aircraft: 397 casesProbable cause
Wing structure: trailing edge flapsAircraft › Aircraft structures · Incorrect use/operationPiper PA-25-235: 1 caseAll aircraft: 33 casesProbable cause
Performance/control parameters: climb rateAircraft › Aircraft oper/perf/capability · Attain/maintain not possiblePiper PA-25-235: 1 caseAll aircraft: 265 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 attempted the takeoff with the flaps in the half or first notch position. Unable to rotate during the takeoff roll, the pilot selected the full flap position, and the agricultural airplane lifted off the 2,500-ft long turf airstrip about 150 feet before the end of the runway. The airplane was unable to climb out of ground effect and contacted corn stalks that were located past the end of the runway. The airplane descended into the vegetation and came to rest nose down and upright. The airplane sustained substantial damage to both wings. According to the airplane owner’s handbook, a takeoff distance of about 1,370 feet was required to clear a 50-foot obstacle with the sprayer configuration. The handbook recommended that the wing flaps be retracted at all times during takeoff.

Aircraft

Registration
N7094Z
Reported as
Piper PA-25-235
Category
Airplane
Serial number
25-5052
Built
1969
Airframe hours
7,029
Engine
Lycoming O-540-B2-B5, 235 horsepower, reciprocating
Damage
Substantial damage
Flight
Aerial application · Part 137
Airworthiness certificate
Special, Restricted (Special)
Last inspection
100 hour · March 4, 2023
Departed
63Y · Tyler, MN
Airport
63Y · Tyler Municipal Airport, runway 32, 2,517 × 160 ft, grass/turf
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
25
Injuries
None
Certificate
Commercial
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 3, Without waivers/limitations
Last flight review
March 21, 2022
Seat
Single
Restraint
4-point
Flight hours
1,126 total · 837 in this make and model · 1,070 as pilot in command · 60 in the last 90 days · 25 in the last 30 days · 4 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
30° at 8 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
79 °F, dew point 72 °F
Altimeter
29.96 inHg
Observed at
KMML, 17 nm away
METAR
KMML 281556Z AUTO 03008KT 10SM CLR 26/22 A2996 RMK AO2 SLP137 T02610217 PNO $=

Docket · 3

The files NTSB released with the investigation on October 5, 2023, on NTSB’s docket system: statements, records, photos and specialists’ reports. 6.9 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.