ERA16LA326

NTSB accident investigation · Hughes 269B · Ozark, AL · September 22, 2016

Accident · Minor injuriesLimited investigationFinal report
Date
September 22, 2016, 16:30 local (21:30 UTC)
Place
Ozark, AL
Injuries
2 minor
Damage
Substantial damage
Phase of flight
Emergency descent
Aircraft
N269BSHughes 269B
Defining event
Autorotation: Loss of engine power (total)
Weather
Visual (VMC) · Day
Status
Completed · report March 18, 2019
Report
Approved by Office Director
NTSB office
Eastern Region Aviation
Parties
FAA/FSDO
FAA report
20160922015859A
Case key
94074

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 total loss of engine power for reasons that could not be determined following a successful postaccident engine run on the accident helicopter.

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 determinedHughes 269B: 2 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 flight instructor stated that the helicopter was in cruise flight at 75 mph and 800 ft mean sea level when he announced "simulated engine failure" and reduced the throttle and collective. The student pilot responded to the simulated emergency by establishing an autorotation and cross-checking the instruments, which were all "normal" or "in the green." During recovery of the maneuver at 100 ft above ground level, the instructor noted the engine rpm was "zero," announced an actual engine failure, joined the student pilot on the flight controls, and completed the autorotation to the ground. At touchdown, the helicopter bounced on the right front skid and rolled onto its right side. The helicopter was recovered to the operator's facility, where an engine start was attempted on the airframe using the helicopter's battery and starter. The engine started immediately and ran smoothly without interruption until manually shut down.

Factual narrative

On September 22, 2016, at 1630 central daylight time, a Hughes 269B helicopter, N269BS, was substantially damaged during a forced landing following a loss of engine power near Ozark, Alabama. The flight instructor and student pilot sustained minor injuries. Visual meteorological conditions prevailed, and no flight plan was filed for the local instructional flight conducted under the provisions of Title 14 Code of Federal Regulations Part 91.The flight instructor and the student pilot each provided written statements, and their accounts of the accident were consistent throughout. According to the flight instructor, the helicopter was in cruise flight at 75 mph and 800 feet mean sea level (msl) when he announced "simulated engine failure" and reduced the throttle and collective controls. The student pilot responded to the simulated emergency, and adjusted the flight controls in order to establish an autorotation at 60 mph. He said that a cross-check of the instruments revealed that all were "normal" or "in the green." The flight instructor stated that he initiated recovery of the maneuver at 100 feet above ground level (agl) by advancing the throttle and checking engine and rotor rpm indications. Because the engine rpm indication was "zero," the flight instructor announced an actual engine failure, joined the student pilot on the flight controls, and completed the autorotation to the ground. At touchdown, the helicopter bounced on the "right front skid" and rolled over onto its right side. The flight instructor held a commercial pilot certificate with ratings for airplane single-engine land, rotorcraft helicopter and instrument airplane and helicopter. He also held ratings for airplane single-engine land, rotorcraft helicopter and instrument airplane and helicopter. His most recent Federal Aviation Administration (FAA) second-class medical certificate was issued June 30, 2016. The pilot reported 5,154 total hours of flight experience, of which 160 hours were in the accident helicopter make and model. A review of the student pilot's records revealed he had accumulated 35 total hours of flight experience, all of which was in the accident helicopter. According to FAA and maintenance records, the helicopter was manufactured in 1965 and was powered by a Lycoming HIO-360-A1A engine. Its most recent annual inspection was completed September 1, 2016, at 4,749 total aircraft hours. At 1653, the weather reported at Hanchey Army Heliport (HEY), 5 nautical miles south of the accident site included few clouds at 6,000 feet agl with 10 statute miles visibility. The wind was from 330°at 5 knots. The temperature was 33° C, the dew point was 19° C, and the altimeter setting was 29.96 inches of mercury. Photographs of the wreckage revealed the cockpit and fuselage were largely intact. The main rotor blades were damaged and the tailboom was severed. The helicopter was recovered to the operator's facility, and on October 4, 2016, an engine start was attempted on theairframe utilizing the helicopter's own battery and starter under the supervision of an FAA inspector. The engine started immediately and ran smoothly without interruption until shut down by the cockpit controls.

Aircraft

Registration
N269BS
Reported as
Hughes 269B
Category
Helicopter
Serial number
65-0205
Built
1965
Airframe hours
4,749
Engine
Lycoming HIO-360-A1A, 180 horsepower, reciprocating
Damage
Substantial damage
Flight
Instructional · Part 91
Airworthiness certificate
Standard, Normal
Last inspection
Annual · September 1, 2016
Departed
71J · Ozark, AL
Destination
71J · Ozark, AL
Equipment
None

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
Flight instructor
Age
51
Injuries
Minor
Certificates
Flight instructor, Commercial
Airplane ratings
Single-engine land
Instrument ratings
Airplane, Helicopter
Medical
Class 2, With waivers/limitations
Seat
Left
Restraint
4-point
Flight hours
5,154 total · 160 in this make and model
Role
Student pilot
Age
23
Injuries
Minor
Certificate
Student
Medical
Class 2, Without waivers/limitations
Seat
Right
Restraint
4-point
Flight hours
35 total · 35 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
330° at 5 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
91 °F, dew point 66 °F
Altimeter
29.95 inHg
Observed at
KHEY, 5 nm away

Docket · 5

The files NTSB released with the investigation on December 12, 2018, on NTSB’s docket system: statements, records, photos and specialists’ reports. 2.1 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.