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exerted pressure on both the flight crew and Maintenance
Technicians to ignore a potential flight hazard.
n Upon arrival for flight,
the Captain and I started
our pre-flight of the
aircraft. Captain found
his (forward) windshield
delaminated. He asked
me to give Maintenance
a call to come and check
out the windshield. Two
Maintenance personnel
arrived and found that the
delaminated window was
one inch out of limits. The
Maintenance crew then
radioed in to their Supervisor
to advise him that the
windshield was out of limits. The Captain and I heard the
Supervisor call back and say, ‘Sign it off.’ The Maintenance
crew member said, ‘It is out of limits and I am not going to
sign it off.’ The Supervisor then said, ‘Are you scared?’ The
Maintenance crew member then said, ‘I am not scared, it is
out of limits and I’m not signing it off! If you want it signed
off, you have to sign it off.’
About three minutes later, we see a Supervisor come to the
stairs of the jetway and walk straight to the logbook and
sign it off without even looking at the delamination on the
window. Then the Supervisor walks into the aircraft and
looks at the window, pushes on it, turns around and says,
‘Your window is just fine.’ I made a comment to the Captain
I can’t believe what he just did, he signed it off without
even looking at it and not even measuring the delamination
of the window….
Inflight, Captain saw that there was a scratch in front of
the delamination on the window…Once we got back, we
wrote up the scratch…and also requested the delamination
be re-inspected. Maintenance met us at the aircraft and
inspected the aircraft and found that it was out of limits
and grounded the aircraft.
Runway Roulette
In coming months, CALLBACK will devote an entire issue
to non-Towered airport incidents. In the meantime, the
report of a Beech 35 pilot describes an all-too-common
event at a non-Towered field.
n I was departing a non-Towered airport. Having
announced my intent on the CTAF to enter Runway 31
for departure, I taxied into position and did a short final
check…and began the takeoff roll. While accelerating
at full power, I heard a transmission that an airplane
intended to enter Runway 13 for departure. I could see a
yellow airplane in the run-up area for 13, and immediately
radioed that I was on takeoff on 31. The yellow airplane
taxied onto the runway and I radioed again, but he kept
coming, so I immediately aborted the takeoff. I estimate
that I was at around 50 knots at the time. I managed to
slow the aircraft enough to get off the runway at the midfield
taxiway. The yellow aircraft continued the takeoff roll
and made a steep climbing turn to the left, which appeared
to be an evasive maneuver. A C172 on base to Runway 31…
transmitted concern that there was someone taking off
opposite direction. A radio transmission, which I believe
came from the yellow airplane, was something like ‘traffic
not a factor.’
The cause of the incident was the yellow airplane choosing
to depart in the opposite direction of traffic using the
single runway, in failing to monitor or hear or heed my
transmissions, and in taxiing onto and departing on a
runway in use despite repeated warnings on the radio.
Had the incursion happened only a few seconds later, the
outcome might have been very different.
362
A Monthly Safety Bulletin from
The Office of the NASA
Aviation Safety Reporting
System,
P.O. Box 189,
Moffett Field, CA
94035-0189
http://asrs.arc.nasa.gov/
January 2010 Report Intake
Air Carrier/Air Taxi Pilots 2684
General Aviation Pilots 752
Controllers 489
Cabin/Mechanics/Military/Other 446
TOTAL 4371
ASRS Alerts Issued in January 2010
Subject of Alert No. of Alerts
Aircraft or aircraft equipment 5
Maintenance procedures 4
TOTAL 9
“Cone of confusion” is one of those versatile aviation terms that
may be applied to conditions other than those intended. In a strict
sense, the term refers to a cone-shaped volume of airspace directly
above ground-based navigation equipment, such as a VOR or NDB,
where there is an area of signal ambiguity that causes bearing
information to be unreliable.
And then there’s a humorous definition found on many aviation web
sites: “Cone of confusion is an area about the size of New Jersey
located near the final approach fix at an airport.” This definition fits
　
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