ATC transponder
For ATC transponder, interval is within the preceding 24 calendar months; applies to is ATC transponder that is specified in 91.215(a), 121.345(c), or § 135.143(c) of this chapter; consequence if lapsed is No persons may use an ATC transponder; regulation section is § 91.413, verified against its source on 2026-08-06.
- Inspection or test item
- ATC transponder verified
- Interval
- within the preceding 24 calendar months verified
- Applies to
- ATC transponder that is specified in 91.215(a), 121.345(c), or § 135.143(c) of this chapter verified
- Consequence if lapsed
- No persons may use an ATC transponder verified
- Regulation section
- § 91.413
What the source says
No persons may use an ATC transponder that is specified in 91.215(a), 121.345(c), or § 135.143(c) of this chapter unless, within the preceding 24 calendar months, the ATC transponder has been tested and inspected and found to comply with appendix F of part 43 of this chapter; and
— ecfr.gov, retrieved 2026-08-06
Source
- ecfr.govhttps://www.ecfr.gov/api/versioner/v1/full/2026-08-01/title-14.xml?part=91§ion=91.413