5-2-19
Inflight Deviations From Transponder/Mode C Requirements Between 10,000 Feet and 18,000 Feet
JO 7110.65BB, Change 3, effective July 9, 2026 · Official text on faa.gov
Apply the following procedures to requests to deviate from the Mode C transponder requirement by aircraft operating in the airspace of the 48 contiguous states and the District of Columbia at and above 10,000 feet MSL and below 18,000 feet MSL, excluding the airspace at and below 2,500 feet AGL.
- Except in an emergency, do not approve inflight requests for authorization to deviate from 14 CFR section 91.215(b)(5)(i) requirements originated by aircraft without transponder equipment installed.
- Approve or disapprove other inflight deviation requests, or withdraw approval previously issued to such flights, solely on the basis of traffic conditions and other operational factors.
- Adhere to the following sequence of action when an inflight VFR deviation request is received from an aircraft with an inoperative transponder or Mode C, or is not Mode C equipped:
- Suggest that the aircraft conduct its flight in airspace unaffected by the CFRs.
- Suggest that the aircraft file an IFR flight plan.
- Suggest that the aircraft provide a VFR route of flight and maintain radio contact with ATC.
- Do not approve an inflight deviation unless the aircraft has filed an IFR flight plan or a VFR route of flight is provided and radio contact with ATC is maintained.
- You may approve an inflight deviation request which includes airspace outside your jurisdiction without the prior approval of the adjacent ATC sector/facility providing a transponder/Mode C status report is forwarded prior to control transfer.
- Approve or disapprove inflight deviation requests within a reasonable period of time or advise when approval/disapproval can be expected.