Boston enhanced Final Approach Runway Occupancy Signal (eFAROS)

The Federal Aviation Administration (FAA) will be conducting an assessment of enhanced Final Approach Runway Occupancy Signal (eFAROS). The operational evaluation of eFAROS at Boston Logan International Airport (BOS) will commence in 2014.

eFAROS flashes the existing Precision Approach Path Indicator (PAPI) lights directly indicating to pilots on final approach that the runway is not safe for landing since it is occupied, or soon to be occupied, by one or more targets.

eFAROS is an experimental system autonomously driven by safety logic based on aircraft location from airport surveillance radars (ASRs), surface detection radars (ASDE-3 or ASDE-X), and multilateration information from the ASDE-X surveillance system. The FAA expects eFAROS to prevent the occurrence of both runway land-over incidents and occupied runway accidents. eFAROS provides a signal of runway occupancy directly to pilots, per NTSB recommendation.

The FAA's assessment of eFAROS at BOS will be conducted on runways 15R/33L, 4R/22L, 4L/22R, 27, and 32 using existing PAPI lights that will have been modified to flash if these runways are occupied and/or there is potential conflict for arriving traffic.


eFAROS Pilot Action Points (click to open new page)

Pilot Protocol for eFAROS

When eFAROS acquisition point of 500 ft AGL is reached with flashing PAPIs

  • Attempt to see traffic on runway
  • If seen, evaluate the situation then proceed with caution
  • If not seen, prepare to contact ATC at contact point

When eFAROS contact point of 300 ft AGL is reached with flashing PAPIs

  • Attempt to see traffic on runway
  • If seen, evaluate the situation then proceed with caution
  • If not seen, contact ATC to verify landing clearance and prepare for an immediate go-around

If tower cancels landing clearance or does not verify landing clearance promptly, flight crew should, at pilot’s discretion, go around.

A STEADY PAPI SIGNAL DOES NOT CONSTITUTE CLEARANCE TO LAND!

Comprehensive training is provided in the briefings available for download below:

Training Card: BOS eFAROS Training Card

Poster: BOS eFAROS Poster

Briefing: Training for BOS Operational Evaluation of Enhanced Final Approach Runway Occupancy Signal (eFAROS)

 

Take the BOS eFAROS Survey!