AC 120-102B

Advisory circular · Incorporation of Electrical Wiring Interconnection Systems Instructions for Continued Airworthiness into an Operator's Maintenance Program

Approved
June 3, 2024
Last reviewed
June 3, 2024
This change
Applicable to SFAR 88.
Family
AC 120-102 · 5 versions
Revision
B
14 CFR parts
21, 25, 26, 43, 121, 129

Guidance, not mandatory unless a rule or AD requires it. DRS record last changed November 22, 2025.

Show pages 16–27

Appendix B B-3 B.20 Responsible Aircraft Certification Service Office. The responsible Aircraft Certification Service office having oversight responsibility for the relevant type certificate (TC) or STC, as determined by the Administrator.

B.21 STC-Developed EWIS ICA. STC holders may use the Maintenance Review Board (MRB) process or any other process they choose. Regardless of the process used, the end result must be ICA that include the applicable inspection tasks, intervals, methods, processes, and procedures to keep the EWIS airworthy throughout its operational life.

B.22 STC EWIS ICA. The inspections and procedures to keep an alteration affecting the EWIS approved under an STC airworthy throughout its operational life.

B.23 TCH EWIS ICA. The inspections and procedures to keep the EWIS airworthy throughout its operational life.

B.24 TCH Original EWIS ICA. The result of the MRB process. During this process, TCH-developed Maintenance Significant Items (MSI) are subjected to maintenance program development logic, such as in MSG-3 or later revisions. The result is an ICA that includes the applicable inspection tasks, intervals, methods, processes, and procedures to keep the EWIS airworthy throughout its operational life.

Appendix C C-1 APPENDIX C. CONTACT INFORMATION FOR QUESTIONS REGARDING

RESPONSIBLE AIRCRAFT CERTIFICATION SERVICE OFFICES C.1 For questions concerning Aircraft Certification Service (AIR) offices, contact Suzanne Masterson, Product Policy Management: Transport Airplanes and Engines Section (AIR-62A), Aircraft Certification Service, Federal Aviation Administration, 2200 South 216th St., Des Moines, WA 98189; telephone: 206-231-3211 or 425-227-1855; email: suzanne.masterson@faa.gov.

Advisory Circular Feedback Form If you find an error in this AC, have recommendations for improving it, or have suggestions for new items/subjects to be added, you may let us know by contacting the Flight Standards Directives Management Officer at 9-AWA-AFB-120-Directives@faa.gov.

Subject: AC 120-102B, Incorporation of Electrical Wiring Interconnection Systems Instructions for Continued Airworthiness into an Operator’s Maintenance Program Date: _____________________ Please check all appropriate line items:

An e rror ( proc edural or typographical) has been noted in paragraph ____________ on page _______.

Recommend paragraph _____________ on page __________ be changed as follows:

______________________________________________________________________ ______________________________________________________________________ In a future change to this AC, please cover the following subject:

(Briefly describe what you want added.)

______________________________________________________________________ ______________________________________________________________________ Other comments:

______________________________________________________________________ ______________________________________________________________________ I would like to discuss the above. Please contact me.

Submitted by: Date: ______________________