GAA17CA382

NTSB accident investigation · Cessna 170 · Alamogordo, NM · June 28, 2017

Accident · No injuriesData collectionFinal report
Date
June 28, 2017, 13:15 local (19:15 UTC)
Place
Alamogordo, NM
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N2774DCessna 170
Defining event
Landing-landing roll: Loss of control on ground
Weather
Visual (VMC) · Day
Status
Completed · report November 14, 2017
Report
Approved by Office Director
NTSB office
General Aviation Accidents
Parties
FAA/ FSDO
FAA report
20170628008739A
Case key
95497

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 receiving instruction’s failure to maintain directional control during the landing roll and the flight instructor’s delayed remedial action, which resulted in a ground loop.

Findings · 4

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.

Performance/control parameters: directional controlAircraft › Aircraft oper/perf/capability · Not attained/maintainedCessna 170B: 74 casesAll aircraft: 3,958 casesProbable cause
Use of equip/info: aircraft controlPersonnel issues › Task performance · Student/instructed pilotCessna 170B: 91 casesAll aircraft: 9,295 casesProbable cause
Use of equip/info: aircraft controlPersonnel issues › Task performance · Instructor/check pilotCessna 170B: 91 casesAll aircraft: 9,295 casesProbable cause
Action: delayed actionPersonnel issues › Action/decision · Instructor/check pilotCessna 170B: 6 casesAll aircraft: 894 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 flight instructor in the tailwheel-equipped airplane reported that the pilot flying was receiving instruction for a tailwheel endorsement. He added that, during the seventh landing of the day, the pilot extended the downwind to allow for traffic that landed ahead of them. He further added that, during the wheel landing touchdown, as the tail was settling to the ground, a wind gust "turned the airplane's tail," which resulted in a ground loop on the runway. The left wing, engine mounts, and windscreen sustained substantial damage. The flight instructor and pilot receiving instruction reported that there were no preaccident mechanical malfunctions or failures with the airplane that would have precluded normal operation. An automated weather observation station at the accident airport recorded wind from 240° at 6 knots. The flight instructor reported that the landing was on runway 22.

Factual narrative

The flight instructor in the tailwheel-equipped airplane reported that the pilot flying was receiving instruction for a tailwheel endorsement. He added that, during the 7th landing of the day, the pilot extended the downwind to allow for traffic that landed ahead of them. He further added that, during the wheel landing touchdown, as the tail was settling to the ground, a wind gust "turned the airplane's tail," which resulted in a ground loop on the runway. The left wing, engine mounts, and windscreen sustained substantial damage. The flight instructor and pilot receiving instruction reported that there were no preaccident mechanical malfunctions or failures with the airplane that would have precluded normal operation. An automated weather observation station, at the accident airport, recorded wind from 240° at 6 knots. The flight instructor reported that the landing was on runway 22.

Aircraft

Registration
N2774D
Reported as
Cessna 170 (B)
Category
Airplane
Serial number
25316
Built
1952
Airframe hours
6,880.2
Engine
Lycoming O-360-AIA, 180 horsepower, reciprocating
Damage
Substantial damage
Flight
Instructional · Part 91
Operator
Sasquatch Air LLC.
Registered owner
Sasquatch Air LLC.
Airworthiness certificate
Standard, Normal
Last inspection
Annual · January 6, 2017
Departed
ALM · Alamogordo, NM
Destination
ALM · Alamogordo, NM
Airport
ALM · Alamogordo-White Sands Rgnl, runway 22, 9,207 × 150 ft, asphalt
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 · 2

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
38
Injuries
None
Certificates
Private, Flight instructor, Commercial
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 2, Without waivers/limitations
Last flight review
February 6, 2016
Seat
Left
Restraint
4-point
Flight hours
550 total · 10 in this make and model · 367 as pilot in command · 30 in the last 90 days · 3 in the last 30 days
Role
Flight instructor
Age
57
Injuries
None
Certificates
Commercial, Airline transport, Flight instructor
Airplane ratings
Single-engine sea, Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 2, With waivers/limitations
Last flight review
July 29, 2016
Seat
Right
Restraint
4-point
Flight hours
7,000 total · 8 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
240° at 6 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
93 °F, dew point 23 °F
Altimeter
29.97 inHg
Observed at
KALM

Docket · 3

The files NTSB released with the investigation on October 19, 2017, on NTSB’s docket system: statements, records, photos and specialists’ reports. 1.2 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.