Presented to:

By:

Date:

Federal AviationAdministration

AIRWORTHINESS General

Aircraft Combustion Heaters

2Federal AviationAdministrationMay, 2014

Objective• Increase Attention to Combustion Heaters

• Identify Troublesome Components

• Review Consequences of Failure

• Discuss Airworthiness Directive Results

• Encourage You to Report Failures

Combustion HeaterHealth Check

3Federal AviationAdministrationMay, 2014

Combustion Heater Health Check

4Federal AviationAdministrationMay, 2014

Beech Baron Janitrol Installation

Combustion heaters are installed in small airplanes & rotorcraft

Combustion Heater Health Check

5Federal AviationAdministrationMay, 2014

Combustion Heater Failures

• Combustion tube

• Combustion air pressure switch

• Fuel regulator valve

• Intake or exhaust fans

Combustion Heater Health Check

6Federal AviationAdministrationMay, 2014

Consequences of Heater Failure

• Carbon Monoxide Poisoning

• Smoke or Fumes

• Fire

• May 11, 2012 a Cessna 401 crash with four fatalities – The NTSB attributed the crash to the combustion heater.

Combustion HeaterHealth Check

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Consequences of Heater Failure

Combustion HeaterHealth Check

8Federal AviationAdministrationMay, 2014

Observations

• Affected airplanes, is it yours?

• Airworthiness Directives (ADs)

• Manufacturer’s Service Bulletins

Combustion Heater Health Check

9Federal AviationAdministrationMay, 2014

Historical Record• AD 2004-21-05

– Applies to certain Kelly Aerospace combustion heaters installed in any airplane, and address defective combustion tubes and combustion air pressure switches

• AD 2004-25-16R1– Applies to certain Kelly Aerospace

combustion heater fuel regulator shut off valves installed in any airplane, and requires inspections/tests/parts replacement or disabling of the heater to prevent fuel leakage

Combustion HeaterHealth Check

10Federal AviationAdministrationMay, 2014

Historical Record Cont.• AD 2005-15-10

– Applies to certain Kelly Aerospace combustion heater fuel pumps installed on Piper Aircraft Models PA-34 and PA-44, and requires inspections/repair/replacement of the pump to prevent fuel leakage

• AD 81-09-09– Applies to Stewart-Warner (South Wind)

combustion heaters installed in any airplane, conduct the 250 hour inspection in accordance with the manufacturer's service manual, see AD.

Combustion HeaterHealth Check

11Federal AviationAdministrationMay, 2014

Report Failures

• Malfunction and Defect Report (General Aviation)

• Service Difficulty Reports (Air Carrier)

• WWW.FAA.GOV

• Aircraft Safety

• Report Safety Issues

Combustion Heater Health Check

12Federal AviationAdministrationMay, 2014

Conclusion

• Questions?

• www.faasafety.gov

• AMT Award Program

• WINGS Program

• GA Award Program

Combustion Heater Health Check