Aircraft Performance Report
The lowest adjusted radio altitude (nominally indicating the bottom of the landing gear, the
fuselage would be an additional 5 ft higher), which occurred as the airplane passed over
PAL115, was 60 ft. Measurements were made using an image of the security camera footage to
confirm this altitude reading. The image when ACA759 and PAL115 are closest is quite small
in the camera frame, so measurements made from the pixilated image are approximate. The
vertical stabilizer of the A340 was well illuminated and is 8.2 m (26.9 ft) tall (Figure 6).
Assuming ACA759 passed directly over PAL1151, the distance between the two airplanes in the
image was measured to be 13.5 ft. Allowing for uncertainty, this measurement was bracketed to
be between 10 and 20 ft of air gap. An A340 is 55 ft tall, so the altitude of the fuselage of
ACA759 as it passed over PAL115 was between 65 and 75 ft. This is consistent with the
adjusted radio altitude.
