ERA22LA176

NTSB accident investigation · Cessna 177RG · Gaithersburg, MD · April 2, 2022

Accident · Minor injuriesClass 4 · LimitedFinal report
Date
April 2, 2022, 16:15 local (20:15 UTC)
Place
Gaithersburg, MD
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N123LSCessna 177RG
Defining event
Approach-VFR pattern final: Collision with terr/obj (non-CFIT)
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
Investigation class
Class 4 - Basic report with no Prelim publish
NTSB office
Eastern Region Aviation
Parties
FAA FSDO
FAA report
20220402004909A
Case key
104875

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 adequate airspeed while maneuvering on final approach which resulted in a high sink rate and subsequent collision with a fence.

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.

Attention/monitoring: attentionPersonnel issues › Psychological · PilotCessna 177RG: 2 casesAll aircraft: 226 casesProbable cause
Performance/control parameters: airspeedAircraft › Aircraft oper/perf/capability · Not attained/maintainedCessna 177RG: 8 casesAll aircraft: 1,681 casesProbable cause
Performance/control parameters: descent/approach/glide pathAircraft › Aircraft oper/perf/capability · Not attained/maintainedCessna 177RG: 1 caseAll aircraft: 809 cases
Object/animal/substance: fence/fence postEnvironmental issues › Physical environment · Contributed to outcomeCessna 177RG: 1 caseAll aircraft: 313 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 pilot reported he was on final approach for a short field landing when the airplane developed an unexpected sink rate from which he did not have time to recover. The airplane subsequently struck a fence bordering the runway and impacted the ground, which resulted in substantial damage to the airframe. A witness located on the approach end of the runway reported that the airplane appeared to be low and at an abnormally slow airspeed, and immediately before impact with the fence, the airplane pitched up rapidly. The pilot stated that he got behind the airplane on approach and there were no mechanical malfunctions or failures with the airplane that would have precluded normal operation.

Aircraft

Registration
N123LS
Reported as
Cessna 177RG
Category
Airplane
Serial number
177RG0334
Built
1973
Airframe hours
2,831
Engine
Lycoming IO-360, 200 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Normal
Destination
Same as departure
Airport
W50 · Davis Airport, runway 08/26, 2,000 × 50 ft, asphalt
Equipment
Electronic primary flight display, ADS-B, 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

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
74
Injuries
Minor
Certificate
Private
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 3, With waivers/limitations
Last flight review
April 16, 2021
Seat
Left
Restraint
3-point
Flight hours
1,410 total · 40 in this make and model · 1,300 as pilot in command

Weather

Conditions
Visual (VMC) · Day
Wind
200° at 7 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
57 °F, dew point 25 °F
Altimeter
29.99 inHg
Observed at
GAI, 5 nm away
METAR
KGAI 022056Z AUTO 20007KT 170V240 10SM CLR 14/M04 A2999 RMK AO2 SLP169 T01391039 56030

Docket · 5

The files NTSB released with the investigation on May 31, 2022, on NTSB’s docket system: statements, records, photos and specialists’ reports. 10.8 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 N123LS · 1

Matched to the same aircraft by N-number and date.