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Hazardous cleaning agent left in a cabin by a cleaning crew
A broken spring causing a SF340 gear unsafe indicator light
http://olias.arc.nasa.gov/asrs
Number 215 May 1997
Construction activities at an airport are sure to
complicate normal procedures. To maintain safe
operations, local controllers must sustain an unusually
high degree of vigilance, particularly when dealing with
construction equipment in their midst. Some controller
reports explain:
n  ATC currently operates a portable tower due to
obstructed views of runways 1/19 caused by the
construction. A construction crane was recently erected in
front of the portable tower, again causing obstructed views
of runways 1/19 and also 14/32. Of primary concern, the
view of the intersection of these runways is obstructed.
This has caused numerous “close calls,” because
controllers in this portable tower cannot see aircraft in or
near this intersection.
Construction-related vehicle traffic in aircraft movement
areas can also be a major cause of workload, as another
controller reports:
n  Air carrier X was cleared for takeoff. I observed a van,
used to shuttle tower personnel in and out, cross the holdshort
line at taxiway A. I instructed X to abort his takeoff.
Due to the amount of construction, we are forced to [get
vehicles across] active runways hundreds of times daily.
Another problem that surfaces near airport work areas is
the temporary signs directing pilots to alternate taxi routes.
n  Due to extensive construction on the airport, some signs
and markings are non-standard. A corporate aircraft
passed his turn and crossed the departure end of runway
28. Air carrier Y was not rolling, but had been cleared to
do so. I cancelled Y’s clearance just prior to its beginning
its departure roll.
Airport Construction Hazards
Pilots also report problems with airport construction area
signage and surface markings. Temporary or paintedover
markings may be difficult to see, particularly at
night or in wet weather. Or, as in the next report,
extraneous objects may be mistaken for markings.
n  Captain landed 300 feet short of displaced threshold.
ATIS out and Tower reported first 1,200 feet displaced due
to construction. No displaced threshold markings on
runway except light posts and three orange barrels on side
of runway to indicate where actual landing zone started.
Captain confused an arresting wire and marking across
runway as the actual threshold.
Fortunately, this crew’s aircraft incurred no damage.
Others did not fare as well with their “short field”
On Your Mark… Stop!
Spring is the time of year when airplane owners think
of getting that aircraft spruced up after a long, cold
winter in the hangar or out on the ramp. But let the
“sprucer” beware:
n  On final, I attempted to put down the landing gear.
The gear appeared to operate normally, but the right
main gear light was not illuminated. However, all
other indicators that the gear was locked down were
functioning normally. I recycled the gear, and also
tested the gear-locked horns for proper operation. I
advised the Tower of the situation, executed a fly-by,
and was advised the gear was down. I made the
approach again and set the aircraft down when the
right main gear collapsed. Minor damage resulted.
When the mechanics lifted the aircraft, the gear came
right down, but the downlock hook didn’t function
properly. I had just picked up the aircraft from the
paint shop, where they apparently got too much
overspray on the gear, resulting in the hook binding.
The reporter suggested that the paint shop be
requested to jack up the aircraft and exercise the
landing gear several times before releasing the
aircraft to the owner.
Spring Sprucing Tip
landings: one pilot damaged a flap and the fuel tank on a
barricade across the runway.
Another crew apparently was on “mental autopilot” during
takeoff, and forgot that the airport construction had caused
a change in their usual departure routine.
n  The published procedure is quite clear: “…turn to a 205°
heading within 1 DME of the airport.” We blew it and were
flying runway heading when Tower had to remind us to
make the turn. The reason we failed to execute the
maneuver properly was due to the use of runway 25 when
we normally operate from runway 21, which was closed for
construction. The departure from runway 21 is basically
runway heading, and that is what we had in our minds.
　
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