VOLUME 4 AIRCRAFT EQUIPMENT AND OPERATIONAL AUTHORIZATIONS
Chapter 14 GENERAL OPERATING AND FLIGHT RULESMAINTENANCE ISSUES
Section 17 Non-Required Safety Enhancing Equipment (NORSEE) Guidance
4-14-17-1 OBJECTIVE. This section provides guidance to aviation safety inspectors (ASI) regarding the acceptability of
equipment designated as Non‑Required Safety Enhancing Equipment (NORSEE).
4-14-17-3 GENERAL. The primary audience for this guidance is Flight Standards District Office (FSDO), certificate management
office (CMO), International Field Office (IFO), headquarters (HQ), and regional personnel who are responsible for certificate management, oversight, and policy.
This guidance applies to Title 14 of the Code of Federal Regulations (14 CFR) parts
29, category and
predecessor aircraft, as addressed in Aircraft Certification Service (AIR) Policy Statement PS-AIR-21.8-1602. It excludes 14 CFR
part 25 (transport
category) and unmanned aircraft for all aircraft categories. Inspector responsibility is limited to normal surveillance activity to ensure compliance with
A. AIR Policy Statement. The purpose of this guidance is to highlight changes in AIR’s policy regarding equipment
approved as NORSEE, outlined in PS-AIR-21.8-1602.
B. Background. The Federal Aviation Administration’s (FAA) mission is to provide the safest, most efficient aerospace
system in the world. AIR: 2018, the vision of the FAA’s future state, calls to improve aviation safety through a variety of methods. One method is
“to encourage and enable voluntary safety enhancements” as found in the AIR 2015 Roadmap for AIR: 2018. Before NORSEE guidance was established, the
FAA had not differentiated between non‑required equipment and the special class of non-required equipment that can enhance safety. To support its mission,
the FAA is implementing an approval process to allow installation of NORSEE in the General Aviation (GA) and rotorcraft fleets. The intent is not to bypass the
existing certification processes or the current level of FAA oversight, but to standardize the approval process specific to NORSEE. Equipment approved as NORSEE
has a variety of uses, including the following:
• Increasing overall situational awareness;
• Providing additional information beyond that provided by the
aircraft’s basic instrumentation;
• Providing independent warning, cautionary, or advisory indications;
• Providing additional occupant safety protection.
C. NORSEE Equipment. Most NORSEE categories fall under the avionics, electronic instrument, and display categories. However,
mechanical and other NORSEE categories can use the same methodology and evaluation approach, as outlined in this policy statement. The types of equipment that
may be considered NORSEE include, but are not limited to, the following:
• Traffic advisory system (TAS);
• Terrain advisory (such as a Terrain Awareness and Warning System
• Attitude indicator;
• Weather advisory,
• Crashworthiness improvement;
• Configuration advisory (e.g., gear advisory for floats and
• Supplemental indication (e.g., a fuel flow or a fuel quantity
• Monitoring/detection system (e.g., a smoke, carbon monoxide, or
• Extinguishing system (e.g., a fire extinguisher); and
• Stability and control (e.g., an autopilot or stability augmentation
NOTE: The goal is to establish one policy that is scalable and adjustable to accommodate and encourage the installation of new
technology safety enhancements into all aircraft product types.
D. Design Approval. The design approval holder (DAH) will receive a letter of approval from the FAA Aircraft Certification
Office (ACO) that granted the approval.
E. Production Approval. The DAH is required to control both the design and the quality of the equipment. To meet the quality
control (QC) requirements, the manufacturer must build the equipment in accordance with its approved design. Applicants who already hold production approval
under 14 CFR
part 21 may produce
a NORSEE under their existing quality system. Applicants who do not hold a part
21 production approval
are required to have a quality system.
F. Marking Requirements. All major components of the equipment produced under this approval must be permanently and legibly
marked with the DAH’s name or abbreviation, part number, and
G. Installation Instructions. Installation instructions are required to be included as part of the design approval. The
installation instructions should describe the installation in adequate detail (i.e., pictorial or descriptive) such that follow-on installations result
in a consistent installation that complies with the manufacturer’s instructions when properly followed.
H. Installation Approval. NORSEE approval under this policy is not an approval for installation on the aircraft. The equipment
becomes eligible for installation on the aircraft after approval. There may be a situation in which installation of the equipment on the aircraft requires
modifications that are considered a major change to type design or major alteration to the aircraft. In these cases, the applicant is required to pursue
appropriate certification path (such as a Supplemental Type Certificate (STC)) or field approval process, regardless of the “non‑required”
I. Maintenance/Operation Information. The DAH is responsible for developing and providing instructions for continued maintenance
and operation, including providing documentation of recommended methods, practices, inspections, repairs, maintenance intervals, calibration, processes, and
procedures similar to Figure 5-1 in FAA Order
8300.16, Major Repair and Alteration Data Approval.
The maintenance information outlines the methods used in maintaining the equipment in proper condition and ensures continued safe operation of the equipment as it
NOTE: Maintenance information is not the same as instructions for continued airworthiness (ICA) required pursuant to part
21.50. The manufacturer is responsible for providing
documentation to satisfy the maintenance information requirement.
J. Operating Limitations. The operating limitations that are part of the maintenance information may include the following or
1) “The XXX system is not a required system and may not be used as a substitution for the certificated aircraft system.”
2) “No operational credit may be taken for installation of XXX system.”
21 AUTHORITY. Part
21 subpart A prescribes
the general certification procedures for products and parts. Section
21.8(d) provides for the approval of articles in any
other manner approved by the FAA.
4-14-17-9 MAINTENANCE RESPONSIBILITY.
A. Field Inspector Actions. Be aware of this new classification of equipment. It will be marked with the DAH’s name or
abbreviation, part number, and
“21.8(d).” Expect to see a 14 CFR part
or (d) maintenance record entry to install the equipment
in accordance with installation instructions, as with any other major or minor alteration. Additionally, any deviation from the installation instructions may
result in a major alteration and should to go back to the approving ACO for consultation, as per FAA Order
8300.16 and the Aircraft Maintenance Division
(AFS-300) Major Repair and Alteration Data Approval online job aid. Installation instructions should contain information on how to maintain equipment as appropriate.
B. Additional Information. If you require any additional information or clarification on NORSEE guidance, refer to PS-AIR 21.8-1602
or contact the Design, Manufacturing, and Airworthiness Division (AIR‑100).
RESERVED. Paragraphs 4-14-17-11 through 4-14-17-25.