<< >> NASA ASRS Report 802697, September 2008

A C172 on a taxiway centerline struck an unmarked; unflagged construction crane with its left wingtip. The propeller subsequently struck some ground debris.

Attributes
ACN	802697
Time
Date	200809
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : zzzz.tower
Operator	general aviation : personal
Make Model Name	Skyhawk 172/Cutlass 172
Operating Under FAR Part	Part 91
Flight Phase	ground : taxi
Flight Plan	None
Person 1
Affiliation	other
Function	flight crew : single pilot
Qualification	pilot : commercial
Experience	flight time last 90 days : 32 flight time total : 1500 flight time type : 1500
ASRS Report	802697
Events
Anomaly	ground encounters other other anomaly
Independent Detector	other flight crewa
Resolutory Action	none taken : detected after the fact
Consequence	other
Supplementary
Problem Areas	Flight Crew Human Performance Airport
Primary Problem	Ambiguous

Narrative:

I had made an appointment with my mechanic to perform some maintenance on my aircraft. I obtained taxi instructions from ground control and proceeded to taxi at 1000 RPM from my tie-down spot on the west side of the airport to the east side of the airport. I exited the controled taxiway and proceeded to taxi on the centerline to my mechanic's hangar. I noticed the new hangar construction on my left; but held the centerline. 1/2 way to the turn to my mechanic's hangar; I contacted my left wing about 1 ft from the tip. The force pivoted the aircraft to the left causing the propeller to contact some construction material on the ground. There were no flags or cones on the crane. When a crane or other object is in the way that will not allow an aircraft to pass safely; there should be construction personnel waving the aircraft away.

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Original NASA ASRS Text

Title: A C172 ON A TXWY CTRLINE STRUCK AN UNMARKED; UNFLAGGED CONSTRUCTION CRANE WITH ITS L WINGTIP. THE PROP SUBSEQUENTLY STRUCK SOME GND DEBRIS.

Narrative: I HAD MADE AN APPOINTMENT WITH MY MECH TO PERFORM SOME MAINT ON MY ACFT. I OBTAINED TAXI INSTRUCTIONS FROM GND CTL AND PROCEEDED TO TAXI AT 1000 RPM FROM MY TIE-DOWN SPOT ON THE W SIDE OF THE ARPT TO THE E SIDE OF THE ARPT. I EXITED THE CTLED TXWY AND PROCEEDED TO TAXI ON THE CTRLINE TO MY MECH'S HANGAR. I NOTICED THE NEW HANGAR CONSTRUCTION ON MY L; BUT HELD THE CTRLINE. 1/2 WAY TO THE TURN TO MY MECH'S HANGAR; I CONTACTED MY L WING ABOUT 1 FT FROM THE TIP. THE FORCE PIVOTED THE ACFT TO THE L CAUSING THE PROP TO CONTACT SOME CONSTRUCTION MATERIAL ON THE GND. THERE WERE NO FLAGS OR CONES ON THE CRANE. WHEN A CRANE OR OTHER OBJECT IS IN THE WAY THAT WILL NOT ALLOW AN ACFT TO PASS SAFELY; THERE SHOULD BE CONSTRUCTION PERSONNEL WAVING THE ACFT AWAY.

Data retrieved from NASA's ASRS site as of May 2009 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.