Jul. 22 at 8:47 PM
The FAA announced a new rule requiring all aircraft operating in the U.S. to be equipped with radio altimeters that can withstand interference from nearby 5G wireless signals. The regulation, which will be published Friday, follows concerns that expanded use of adjacent spectrum could affect critical aviation safety systems used during takeoffs, landings, and low-visibility operations.
The move comes after the FCC voted to auction 160 MHz of upper C-band spectrum in July 2027. To reduce risks, the FAA said safeguards will include limits on 5G transmission power and restrictions on tower heights near flight paths. Airlines that need to replace or upgrade equipment will be eligible for reimbursement under a federal program.
The FAA previously estimated that upgrading aircraft with compliant altimeters could cost about
$4.5 billion before reimbursements. .
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