ERA18LA034

NTSB accident investigation · Aero Commander 112 · Westminister, MD · November 29, 2017

Accident · No injuriesLimited investigationFinal report
Date
November 29, 2017, 09:30 local (14:30 UTC)
Place
Westminister, MD
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N690RUAero Commander 112
Defining event
Landing: Landing area undershoot
Weather
Visual (VMC) · Day
Status
Completed · report July 23, 2019
Report
Approved by Office Director
NTSB office
Eastern Region Aviation
Parties
FAA/FSDO
FAA report
20171129022189A
Case key
96400

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 student pilot's failure to maintain a proper glidepath during the approach due to his distraction by the failure of an avionics panel, which resulted in a runway undershoot.

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.

Use of equip/info: aircraft controlPersonnel issues › Task performance · Student/instructed pilotAero Commander 112: 3 casesAll aircraft: 9,295 casesProbable cause
Performance/control parameters: descent/approach/glide pathAircraft › Aircraft oper/perf/capability · Not attained/maintainedAero Commander 112: 1 caseAll aircraft: 809 casesProbable cause
Attention/monitoring: attentionPersonnel issues › Psychological · Student/instructed pilotAero Commander 112: 1 caseAll aircraft: 226 casesProbable cause
Communications systemAircraft › Aircraft systems · FailureAero Commander 112: 1 caseAll aircraft: 7 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 student pilot reported that, during the cross-country flight, he thought that the airplane had experienced an electrical failure, and he chose to divert to an airport. During final approach to the diversion airport, the student descended the airplane too low and then attempted to correct it by increasing engine power. Subsequently, the airplane impacted a grassy area just before the runway, which resulted in all three landing gear separating. Examination of the wreckage revealed that the electrical system was functional but that an avionics panel had failed. The failed avionics panel likely distracted the student pilot and led to his failure to maintain a proper glidepath during the approach, which resulted in the runway undershoot. The student reported that there were no other preimpact mechanical malfunctions or failures with the airplane that would have precluded normal operation.

Factual narrative

On November 29, 2017, about 0930 eastern standard time, an Aero Commander 112, N690RU, owned and operated by the student pilot, was substantially damaged during a precautionary landing at Clearview Airpark (2W2), Westminster, Maryland. The student pilot was not injured. The solo instructional flight was conducted under the provisions of Title 14 Code of Federal Regulations Part 91. Visual meteorological conditions prevailed and no flight plan was filed for the flight that originated from Martin State Airport (MTN), Baltimore, Maryland, about 0900. The flight was destined to Eastern WV Regional Airport (MRB), Martinsburg, West Virginia.The student pilot reported that 2W2 was his second checkpoint along the cross-country flight. Upon reaching 2W2, the airplane experienced an electrical failure that affected the communication radios and GPS. The student pilot then elected to divert to 2W2 and entered the airport traffic pattern for runway 32, an 1,840-foot long, 30-foot wide asphalt runway. While completing landing procedures, the student pilot extended the landing gear, but did not observe the corresponding green indicator lights in the cockpit. He could not be certain if he did not see the lights due to the electrical failure or because of sun glare. While on the left base leg of the traffic pattern, the student pilot lowered the nose of the airplane to cease the stall warning horn and the airplane flew beyond the extended runway centerline; however, the student pilot corrected and aligned the airplane on final approach. While on short final approach, the airplane descended suddenly and the student pilot immediately compensated by increasing engine power, but the landing gear contacted a grass area before runway and all three landing gear separated. The airplane came to rest upright just prior to the runway. Examination of the wreckage by a Federal Aviation Administration inspector revealed substantial damage to the fuselage. When the inspector tested the airplane's electrical system, it functioned, but the avionics panel extinguished after approximately 10 seconds of operation. The recorded wind at an airport located about 10 miles north of the accident site, at 0925, was from 230° at 6 knots. The student pilot reported that the wind at 2W2 was from 140° at 8 knots, gusting to 12 knots, at the time of the accident.

Aircraft

Registration
N690RU
Reported as
Aero Commander 112 (UNDESIGNAT)
Category
Airplane
Serial number
33
Built
1973
Airframe hours
3,692
Engine
Lycoming IO-360, 200 horsepower, reciprocating
Damage
Substantial damage
Flight
Instructional · Part 91
Airworthiness certificate
Standard, Normal
Last inspection
Annual · May 12, 2017 · 19 hours before
Departed
MTN · Baltimore, MD
Destination
MRB · Martinsburg, WV
Airport
2W2 · Clearview Airpark, runway 32, 1,840 × 30 ft, asphalt
Equipment
Angle of attack indicator, ADS-B, Stall warning system, Onboard weather, Handheld GPS, Electronic flight bag or handheld device, Auto-pilot

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
62
Injuries
None
Certificate
Student
Medical
BasicMed
Seat
Left
Restraint
3-point
Flight hours
179 total · 39 in this make and model · 16 as pilot in command · 16 in the last 90 days · 3 in the last 30 days · 0 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
230° at 6 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
54 °F, dew point 32 °F
Altimeter
30.17 inHg
Observed at
DMW, 10 nm away

Docket · 4

The files NTSB released with the investigation on December 3, 2018, on NTSB’s docket system: statements, records, photos and specialists’ reports. 2.3 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.