CEN23LA032

NTSB accident investigation · Mulholland Robert A Vans RV-7 · Englewood, CO · November 9, 2022

Accident · No injuriesClass 4 · LimitedFinal report
Date
November 9, 2022, 10:48 local (17:48 UTC)
Place
Englewood, CO
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Initial climb
Aircraft
N771RGMulholland Robert A Vans RV-7
Defining event
Initial climb: Windshear or thunderstorm
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
Investigation class
Class 4 - Basic report with no Prelim publish
NTSB office
Central Region
Parties
FAA
FAA report
20221109017399A
Case key
106271

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

An encounter with windshear during the initial climb after takeoff, which resulted in a loss of control. Contributing to the accident was the pilot’s improper decision to takeoff with a tailwind.

Findings · 3

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.

Wind: windshearEnvironmental issues › Conditions/weather/phenomena · Effect on operationMulholland Robert A VANS RV-7: 1 caseAll aircraft: 90 casesProbable cause
Wind: tailwindEnvironmental issues › Conditions/weather/phenomena · Contributed to outcomeMulholland Robert A VANS RV-7: 1 caseAll aircraft: 594 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 that, during the initial climb following a takeoff from takeoff from runway 10, the airplane encountered a wind shift that forced the airplane back to the ground and it departed the side of the runway. During the runway excursion, the airplane sustained substantial damage to the right wing. The pilot reported no pre-impact mechanical malfunctions or failures that would have precluded normal operation. Before the pilot’s departure another airplane reported windshear, a 15-20 knot gain on final for runway 35R. Low-level windshear advisories were in effect at the time of departure, and when cleared for takeoff, the controller reported the wind from 340° at 9 knots.

Aircraft

Registration
N771RG
Reported as
Mulholland Robert A Vans RV-7
Category
Airplane, amateur-built
Serial number
70746
Built
2008
Engine
Lycoming IO-360-B1A, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Special, Experimental (Special)
Airport
APA · Centennial, runway 10, 4,800 × 75 ft, asphalt
Equipment
Unknown

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
72
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, With waivers/limitations
Seat
Left

Weather

Conditions
Visual (VMC) · Day
Wind
350° at 11 knots
Visibility
10 statute miles
Temperature
54 °F, dew point 28 °F
Altimeter
29.73 inHg
Observed at
KAPA, 1 nm away
METAR
KAPA 091753 35011KT 10SM FEW100 FEW200 12/M02 A2973

Docket · 2

The files NTSB released with the investigation on February 15, 2023, on NTSB’s docket system: statements, records, photos and specialists’ reports. 1.0 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.