Installation of NonRequired Equipment
Presented to: AEA Rotorcraft Forum
By: Mark Wiley
Date: January 24, 2013
Federal Aviation
Administration
Outline
• What is Non-Required Equipment?
• Regulatory Basis
• Installation Assessment
• Configuration Control
• Policy and Guidance
Federal Aviation
Administration
2
2
What is Non-Required Equipment
• Equipment that is not required by
– Rotorcraft Airworthiness Rules: Parts 27 and 29
– Operating Rules: Parts 91, 133, or 135, etc.
• Has some Declared Intended Use or
Function / Mission benefit
– Passenger comfort or entertainment
– Mission equipment
• It does not include enhancements to
required equipment
Federal Aviation
Administration
3
3
Regulatory Basis
• Applicable Regulations
– Intended Use
• 1301 Function
– Hazard Assessment
• 1309 Failure Conditions
– Other airworthiness regulations that apply
• 1351, 1357 as an example
Federal Aviation
Administration
4
4
Regulatory Basis
• 1301 (intended use or function)
– Applicant is afforded quite a bit of leeway in this
area.
• Clearly define what the system or equipments
intended purpose is.
• Or the inverse i.e. what it won’t do or is not
intended for use as.
• Proposed limitations for the aircraft crew or
equipment when it is installed
• Loss of function will typically have no safety effect
• Address any required training
Federal Aviation
Administration
5
5
Regulatory Basis
• 1309 (Hazard Assessment)
– Equipment poses no hazard to the aircraft, crew or passengers
• Loss of the equipment/function
• Equipment malfunction or failure
– Equipment does not pose a hazard to other aircraft or
personnel on the ground
– Software and complex electronic hardware design assurance
• Design assurance levels should be commensurate with the
Failure or malfunction hazard classification Not for Loss of
Function if there is no safety effect
• If a safety effect is identified, appropriate design assurance
levels are required
Federal Aviation
Administration
6
6
Installation Assessment
• System safety and environmental
assessment
– To identify and categorize any potential hazards
(based on FHA)
– To limit the scope of the certification and determine
the extent of environmental, ground and flight testing
• Laboratory Qualification
• Equipment performance verified in operational
environments
• Operational limitations and placards may be
required
Federal Aviation
Administration
7
7
Installation Considerations
• Does the equipment interface with required
equipment?
• Where will the equipment be located?
• Is the equipment a potential source (e.g. clocked
processor, transmitter) of radiated and/or
conducted electromagnetic interference?
• What is the flammability potential of the
equipment?
• What are the electrical power requirements for the
equipment?
• Does the equipment have its own battery?
Federal Aviation
Administration
8
8
Configuration Control
• Need configuration control of COTS equipment for
subsequent installations or parts replacement
– Provides process for reporting any changes to certified
equipment to ensure airworthiness for follow-on installations
• Options
– Lifetime buy
– Type design source control drawing and test procedure
• Source control drawing defines critical COTS
characteristics (e.g. dimensions, weight, power, battery,
case material, performance, electrical or mechanical
interface)
– COTS critical characteristics conformity inspection
• Test procedure
– Verify that the COTS meets the critical power,
performance and interface requirements
– Aircraft installation check
» EMC
» Aircraft Interfaces
Federal Aviation
Administration
9
9
Policy and Guidance
• AC 20-168, Certification Guidance for Installation of
Non-Essential, Non-Required Aircraft Cabin Systems
and Equipment
– References RTCA/DO-313, Certification Guidance for
Installation of Non-Essential, Non-Required Aircraft Cabin
Systems and Equipment
• AC 20-177, Design and Installation Guidance for an
Airborne System for Non-Required
Telecommunications Service in Non-Aeronautical
Frequency Bands
• AC 27-1B, Certification of Normal Category Rotorcraft
• AC 29-2C, Certification of Transport Category
Rotorcraft
Federal Aviation
Administration
10
10
Non-Required Equipment
Questions ?
Federal Aviation
Administration
11
11