- Date
- July 10, 2019, 21:54 local (Jul 11, 2019, 01:54 UTC)
- Place
- Vineyard Haven, MA
- Injuries
- 2 uninjured
- Damage
- Substantial damage
- Phase of flight
- Approach
- Aircraft
- N677DMCessna 172
- Defining event
- Approach: Course deviation
- Weather
- Instrument (IMC) · Night
- Status
- Completed · report December 2, 2019
- Report
- Approved by Office Director
- NTSB office
- General Aviation Accidents
- Parties
- FAA
- FAA report
- 20190710009739A
- Case key
- 99817
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's failure to maintain lateral position in relation to the instrument approach course at night in instrument meteorological conditions, which resulted in collision with a tree.
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.
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, while conducting an instrument landing system (ILS) approach at night in instrument meteorological conditions and while correcting course on the ILS, she saw full right deflection, corrected to the left, and then observed full left deflection on the course direction indicator about the decision altitude. She added that she then heard and felt a loud "bang." The airplane turned left, she aborted the approach, executed a missed approach, and declared an emergency. She was then vectored to a nearby airport where she landed the airplane without further incident. The airplane sustained substantial damage to the left wing. An examination by the Federal Aviation Administration inspector revealed pine needles in the damaged section of the left wing. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation. The airport's automated weather observation station reported that, about the time of the accident, the wind was from 220° at 5 knots, visibility 1/4 statute mile, runway visual range 1,800 ft, variable 2,200 ft, cloud condition fog, vertical visibility 200 ft, temperature 21°C (70°F), dew point 21°C (70°F), and altimeter setting 30.01 inches of mercury. The pilot was landing the airplane on runway 24.
Factual narrative
The pilot reported that, while conducting the instrument landing system (ILS) 24 approach at night in instrument meteorological conditions, while correcting course on the ILS, she saw full right deflection, corrected to the left, and then observed full left deflection on the course direction indicator (CDI) at about the decision altitude. She then heard and felt a loud "bang." The airplane turned left, she aborted the approach, executed the missed approach, and declared an emergency. She was then vectored to a nearby airport where she landed without further incident. An examination by the Federal Aviation Administration inspector revealed pine needles in the damaged section of the airplane's left wing. The airplane sustained substantial damage to the left wing. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation. The airport's automated weather observation station reported that, about the time of the accident, the wind was from 220° at 5 knots, visibility one-quarter statute miles, runway visual range 1,800 ft variable 2,200 ft, cloud condition fog, vertical visibility 200 ft, temperature 21°C (70°F), dew point 21°C (70°F), altimeter setting 30.01" Hg. The airplane was landing runway 24.
Aircraft
- Registration
- N677DM
- Reported as
- Cessna 172 (SP)
- Category
- Airplane
- Serial number
- 172S9661
- Built
- 2004
- Airframe hours
- 8,060.1
- Engine
- Lycoming IO-360-L2A, 180 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Personal · Part 91
- Operator
- Air Fleet Training Systems
- Registered owner
- Aa-Aero Inc
- Airworthiness certificate
- Standard, Normal
- Last inspection
- 100 hour · July 3, 2019
- Departed
- GON · Groton (New London), CT
- Destination
- MVY · Vineyard Haven, MA
- Flight plan
- IFR
- Airport
- MVY · Martha's Vineyard, runway 24, 5,504 × 100 ft, asphalt
- Equipment
- Auto-pilot, ADS-B, Handheld GPS
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
- Certificates
- Commercial, Flight instructor
- Airplane ratings
- Single-engine land
- Instrument ratings
- Airplane
- Medical
- Class 1, Without waivers/limitations
- Last flight review
- March 26, 2019
- Seat
- Right
- Restraint
- 3-point
- Flight hours
- 600 total · 550 in this make and model · 540 as pilot in command · 133.3 in the last 90 days · 54.7 in the last 30 days · 1.5 in the last 24 hours
Weather
- Conditions
- Instrument (IMC) · Night
- Wind
- 220° at 5 knots
- Lowest ceiling
- 200 ft overcast
- Temperature
- 70 °F, dew point 70 °F
- Altimeter
- 30.01 inHg
- Observed at
- KMVY
Docket · 3
The files NTSB released with the investigation on September 6, 2019, on NTSB’s docket system: statements, records, photos and specialists’ reports. 1.5 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.
Other investigations on N677DM · 1
Matched to the same aircraft by N-number and date.