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another aircraft’s apparent failure to obtain taxi
clearance.
■ While we were taxiing from the gate to taxiway A, a
jet landed and exited the runway at the intersection of A
and the high-speed taxiway at a high rate of speed
directly toward our aircraft. I was forced to take evasive
action to stay safely out of his path. I queried Tower if
he had cleared the aircraft off at that exit, and he replied
that he had not.
This incident was not so close as to pose an immediate,
direct hazard to my aircraft and passengers…largely
owing to the fact that my crew saw an unsafe situation
rapidly developing and took timely evasive action.
Fortunately, “see and avoid” works well on the ground,
too.
A high-speed “taxi” incident of a different sort is
reported by a general aviation pilot:
■ I was on a long straight-in approach to runway 1L.
At about 15 miles out, I was asked by the Approach
Controller if I had the airport in sight…and as I got
closer, he asked if I had the runway in sight. I answered
yes as I could see the right runway and what I thought
was the left runway. After I was switched to the Tower,
he asked if I had the runway in sight. I answered
affirmative, as I could see the two runways I had
identified earlier. I landed on the left one. As I slowed
to turn off, the Tower told me I had landed on the
taxiway.
By then it was quite clear to me, as where I turned off
was at the start of runway 1L. I should have looked at
the diagram of the runways I had with me long before I
landed…
Other pilots have also reported experiencing this
embarrassment.
A Monthly Safety Bulletin
from
The Office of the NASA
Aviation Safety Reporting
System,
P.O. Box 189,
Moffett Field, CA
94035-0189
Number 206 August 1996
May 1996 Report Intake
Air Carrier Pilots 1891
General Aviation Pilots 682
Controllers 107
Cabin/Mechanics/Military/Other 27
T O T A L 2707
ASRS Recently Issued Alerts On...
Dual generator failure on a B737-200
Autopilot rate gyroscope failure in a B747-100
Smoke hazard from overheated fluorescent light ballast
DC-9 rudder deflections attributed to autopilot malfunction
Erroneous altimeter readings caused by an electrical surge
Last month, we looked at some
of the results of taxiway and runway
incursion incidents. This month, we focus on a
specific taxiway incursion issue encountered by pilots at a
number of busy airports. An air carrier pilot explains the
problem:
n  We landed on runway 36, and were instructed to hold
short of taxiway Z, which is the parallel taxiway for
runway 36. In order to be sure the tail of the aircraft was
clear, I taxied onto taxiway Z. The Controller got upset.
We indicated that the only way to insure that our tail was
clear was to taxi onto Z, since Tower had already cleared
an airplane for takeoff behind us. We also stated that we
believed it was appropriate that no part of the aircraft be
beyond the hold line (between the hold line and the active
runway).
When pilots are clearing runways with large aircraft, they
have no way of exactly determining when their tail is clear
of the runway… Many controllers do not understand that
if a widebody is on the centerline of a runway, its wingtips
[may] extend beyond the edge of the runway. It is not
acceptable for wingtips to touch the tails of other aircraft
[holding on an adjacent taxiway].
Several other reporters have faced the same problem:
n  The distance between the runway and the parallel
taxiway is so narrow that a widebody whose tail is clear of
the runway will have its nose into the parallel taxiway.
n  Tower issued instructions to clear the runway and hold
short of the parallel taxiway. We couldn’t do both. If we
held short of the taxiway, it looked like our tail would be
over the line and not clear of the runway.
n  [On takeoff roll], I saw the previous aircraft’s tail
sticking out about 20 feet onto the runway. The First
Officer swerved and…we both felt we had missed the other
aircraft. [At our destination], we found a piece of the left
wing leading edge missing.
Normally, ATC will provide taxi instructions if an aircraft
is required to enter a taxiway or runway in order to clear
the landing runway. However, the Air Traffic Control
Handbook (7110.65J) states: “In the absence of ATC
instructions, an aircraft should taxi clear of the landing
runway even if that requires the aircraft to protrude into
　
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