CEN10LA432

NTSB accident investigation · Beech A24R · Muskegon, MI · July 25, 2010

Accident · Serious injuriesLimited investigationFinal report
Date
July 24, 2010, 20:25 local (Jul 25, 2010, 00:25 UTC)
Place
Muskegon, MI
Injuries
1 serious
Damage
Substantial damage
Phase of flight
Initial climb
Aircraft
N24584Beech A24R
Defining event
Initial climb: Loss of engine power (partial)
Weather
Visual (VMC) · Day
Status
Completed · report July 18, 2011
Report
Approved by Office Director
NTSB office
Central Region
Parties
FAA Grand Rapids FSDO
FAA report
20100724039499A
Case key
76742

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 loss of engine power for undetermined reasons.

Findings · 2

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.

Engine (reciprocating)Aircraft › Aircraft power plant · Not specifiedBeech A24R: 2 casesAll aircraft: 497 casesProbable cause
Not determinedNot determined › Not determined · Unknown/Not determinedBeech A24R: 4 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 pilot reported that he flew three flight legs before the accident flight. After the third flight leg the airplane was refueled with 42.4 gallons of fuel. He performed a preflight that included checking the fuel for contamination and none was evident. The taxi and pretakeoff engine run-up were normal. The airplane was about 200 feet in the air when the engine started running rough and backfiring. He performed the emergency checklist procedures for engine failure after liftoff by switching fuel tanks and adjusting the mixture, but was not able to successfully address the engine problems. The pilot was unable to maintain altitude so he executed a forced landing to a wooded area less than a mile from the airport. The airplane struck trees and terrain during the forced landing. Much of the airplane structure was consumed by the postimpact fire. The postaccident inspection of the engine and fuel system revealed no preexisting anomalies that would preclude normal engine operation.

Factual narrative

On July 24, 2010, about 2025 eastern daylight time, a Beech A24R, N24584 impacted the terrain after a loss of engine power during the initial climb after departing from the Muskegon County Airport (MKG), Muskegon, Michigan. The airline transport pilot was seriously injured. The airplane was destroyed by a postimpact fire. The 14 Code of Federal Regulations Part 91 personal flight originated from MKG with DuPage Airport (DPA), West Chicago, Illinois, as the intended destination. Visual meteorological conditions prevailed at the time of the accident and no flight plan was filed. The pilot reported that he flew three flight legs before the accident flight. Earlier in the day he departed DPA and flew to Manistee, Michigan, and then to Cadillac, Michigan, where he dropped off a passenger. He departed Cadillac, Michigan, and flew to MKG, where the airplane was refueled with 42.4 gallons of fuel. The pilot reported that he performed a preflight inspection at MKG that included checking the fuel for contamination. No contamination was evident. The taxi and pre-takeoff engine run-up were normal s was the initial departure. When the airplane was about 200 feet in the air he retracted the landing gear, and the engine started running rough and backfiring. He performed the emergency checklist procedures for engine failure after liftoff. He reported that he switched fuel tanks and adjusted the fuel mixture to try to get the engine to run smoothly. The airplane was losing altitude so he decided against attempting to return to the airport. He banked left in order to avoid some houses and he executed a forced landing in a wooded area. Although he heard the stall warning horn sound, he maintained flying speed. The airplane hit a pine tree and impacted the terrain about 40 feet away from the pine tree, and less than a mile from the airport. A local resident arrived at the scene shortly after the accident occurred. He assisted the pilot in evacuating the airplane. Soon after the pilot escaped from the airplane, the airplane was engulfed in flames and much of the airplane structure was consumed by the fire. The pilot held an airline transport pilot certificate with single-engine land, multi-engine land, and instrument airplane ratings. He was a certified flight instructor with single-engine land, multi-engine land, and airplane instrument ratings. He had a total of about 2,504 flight hours with 39 hours in the make and model of the accident airplane. He held a first-class medical certificate. The airplane was a single-engine Beech A24R, serial number MC-125. It had seating for six and the maximum gross weight was 2,635 pounds. The engine was a 200-horsepower Lycoming IO-360-A1B1. The last annual maintenance inspection was conducted on July 7, 2010, and the total airframe time was 2,730 hours at the time of the inspection. A Federal Aviation Administration airworthiness inspector examined the airplane at the accident site and at a hanger where the airplane wreckagewas moved for inspection. The flight controls exhibited continuity. The right wing had extensive fire damage. The left wing was largely intact. About 5 – 6 gallons of light blue fluid were drained from the left fuel tank. The cockpit and instrument panel were consumed by fire. The engine exhibited extensive fire damage. The crankshaft was rotated and all the cylinders exhibited “thumb” compression. The bottom spark plugs were removed and appeared clean. The right magneto had spark on all four leads. The left magneto did not spark. Its impulse coupling worked but its wire leads were fire damaged. No fuel was found in the fuel lines or fuel divider. The engine driven fuel pump exhibited sucking action. The fuel servo had fire damage and minor impact damage. The electric fuel boost pump appeared to be jammed. The fuel selector was fire damaged. The fuel selector placard was consumed by fire. Air was blown through the left tank fuel line and through the fuel selector. The air intake was clean and the filter element appeared clean. The propeller remained attached to the engine. All three blades exhibited some degree of aft bending. The following fuel system components were examined at RLB Accessories in Addison, Illinois: 1) Fuel injector servo 2) Engine driven fuel pump 3) Electric boost pump 4) Gascolator, and 5) Fuel selector. The inspection of the fuel servo revealed that the - 2538283 [dash 2538283] seat was fire damaged. A new seat was installed and the fuel servo passed the bench test. The engine driven fuel pump was able to pump fluid when manipulated. The electric boost pump exhibited fire and impact damage. It appeared to be jammed. The motor was removed from the pump and the motor operated when electrical power was applied. The gascolator was intact but fire damaged. The fuel screen was intact but appeared to be discolored from fire damage. The gascolator bowl retaining bolt was loose and there was no safety wire attached. The gascolator fuel inspection valve exhibited impact damage. The fuel selector valve exhibited fire and impact damage. Air could be blown through the fuel lines that led to the left and right fuel tanks when the valve was appropriately positioned.

Aircraft

Registration
N24584
Reported as
Beech A24R
Category
Airplane
Serial number
MC-125
Airframe hours
2,730
Engine
Lycoming I0360-A1B1, 200 horsepower, reciprocating
Damage
Substantial damage
Fire
On-Ground
Flight
Personal · Part 91
Operator
Christopher F. Porter
Registered owner
Gierloff Richard J
Airworthiness certificate
Standard, Normal
Last inspection
Annual · July 20, 2010
Departed
MKG · Muskegon, MI
Destination
DPA · West Chicago, IL
Airport
MKG · Muskegon County Airport, runway 24, 6,501 × 150 ft, asphalt

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
39
Injuries
Fatal
Certificates
Flight instructor, Airline transport
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, Without waivers/limitations
Last flight review
March 1, 2010
Seat
Left
Flight hours
2,504 total · 39 in this make and model · 1,711 as pilot in command · 112 in the last 90 days · 85 in the last 30 days · 5 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
200° at 15 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
77 °F, dew point 72 °F
Altimeter
29.87 inHg
Observed at
MKG, 1 nm away

Docket · 24

The files NTSB released with the investigation on June 8, 2011, on NTSB’s docket system: statements, records, photos and specialists’ reports. 13.0 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.

Other investigations on N24584 · 1

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