FTW01LA182

NTSB accident investigation · Schweizer 269C-1 · San Antonio, TX · August 11, 2001

Accident · No injuriesLimited investigationFinal report
Date
August 11, 2001, 12:15 local (17:15 UTC)
Place
San Antonio, TX
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N1234XSchweizer 269C-1
Weather
Visual (VMC) · Day
Status
Completed · report November 25, 2003
Report
Approved by Office Director
Parties
FAA
FAA report
20010811018709A
Case key
53022

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 loss of engine power while maneuvering for undetermined reasons.

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

Loss of engine powerManeuvering
Reason for occurrence undeterminedCause
Hard landingLanding - flare/touchdown
Terrain condition - ground

Analysis

About 45 minutes into the flight, the CFI demonstrated a power recovery autorotation. He then allowed his student to perform the maneuver. The CFI informed the student that he would be near the flight controls and advise on what actions to take during the maneuver. After the entry into the autorotation, the CFI checked that the engine and rotor RPMs appeared to be normal. At approximately 10-15 feet, the CFI instructed the student to apply engine power. The engine did not respond to throttle movement so the CFI took the controls, and it appeared that the engine had "failed." The helicopter then landed "hard" and turned 180-degrees. The reason for the loss of power was not determined.

Factual narrative

On August 11, 2001, approximately 1215 central daylight time, a Schweizer 269C-1 helicopter, N1234X, registered to and operated by Stinson Air Center of San Antonio, Texas, was substantially damaged during a hard landing at the Stinson Municipal Airport, San Antonio, Texas. The certified flight instructor (CFI) and his student pilot were not injured. Visual meteorological conditions prevailed and a flight plan was not filed for the 14 Code of Federal Regulations Part 91 instructional flight. The local flight originated at 1130.

About 45 minutes into the flight, the CFI demonstrated a power recovery autorotation. He then allowed the student to perform the maneuver. The CFI informed the student that he "would be near the flight controls" and he would advise the student on corrective actions to take during the practice autorotation. Following the the entry into the autorotation, the CFI checked that the engine and rotor RPMs appeared to be normal. At approximately 10-15 feet agl, the CFI instructed the student to apply engine power. The engine power did not respond to throttle movement so the CFI took the controls, and it appeared that the engine had "failed." The helicopter then landed "hard" and turned 180-degrees, resulting in structural damage to the fuselage and tail boom.

The reason for the loss of engine power was not determined.

Aircraft

Registration
N1234X
Reported as
Schweizer 269C-1
Category
Helicopter
Serial number
24
Airframe hours
1,385
Engine
Lycoming Ho-360-C1A, 180 horsepower, reciprocating
Damage
Substantial damage
Flight
Instructional · Part 91
Registered owner
Stinson Air Center
Airworthiness certificate
Standard, Normal
Last inspection
Annual · March 11, 2001 · 50 hours before
Departed
SSF · San Antonio, TX
Destination
SSF · San Antonio, TX
Airport
SSF · Stinson Municipal Airport

Flight crew · 2

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
43
Injuries
None
Certificates
Flight instructor, Airline transport
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Helicopter, Airplane
Medical
Class 1, Valid Medical--no waivers/lim.
Last flight review
June 28, 2001
Seat
Left
Flight hours
9,115 total · 177 in this make and model · 6,244 as pilot in command · 145 in the last 90 days · 85 in the last 30 days · 1 in the last 24 hours
Role
Student pilot
Age
37
Injuries
None
Certificate
Student
Medical
Class 3, Valid Medical--no waivers/lim.
Seat
Right
Flight hours
42 total · 42 in this make and model · 42 in the last 90 days · 42 in the last 30 days · 2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
190° at 11 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
93 °F, dew point 66 °F
Altimeter
30.03 inHg
Observed at
SSF

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.