Boeing Bulletins

GEN-5 : Autoland

30 November 2003

Effectivity

Please refer to source document.

Reason

This bulletin provides information informing flight crews of conditions that preclude the use of autoland.

Information in this bulletin is recommended by The Boeing Company, but may not be FAA approved at the time of writing. In the event of conflict with the FAA approved Airplane Flight Manual (AFM), the AFM shall supersede. The Boeing Company regards the information or procedures described herein as having a direct or indirect bearing on the safe operation of this model airplane.

Background Information

During the 767-300 autoland certification, unusually high sink rates at touchdown were encountered in high density altitude conditions with tailwinds, and groundspeeds in excess of 165 knots. An improved autoland system was developed to reduce sink rates at these conditions. Subsequent evaluation of the 767-200 under similar conditions has shown that high sink rates could also develop at touchdown from an autoland for all 767-200s with the -103, -105, and -106 FCC without the improved autoland system activated. The improved autoland system is standard for all 767-300 airplanes and available for retrofit on the 767-200 airplanes by installing the -106 or later FCC and activating the wiring change of Boeing Service Bulletin 767-22-0026 or production introduction of equivalent configuration by PRR B11723 (Part A and B).

Operating Instructions

Pending operator fleetwide FCC and wiring update the following applies:

If groundspeed on short final approach (approximately 200 feet AGL) exceeds 165 knots, accomplish a manual landing.

Administrative Information (Extract)

This Operations Manual Bulletin will be canceled after Boeing is notified that all affected airplanes in the operators fleet have been modified by Boeing Service Bulletin 767-22-0026.