<< >> NASA ASRS Report 159256, September 1990

On preflight walk-around inspection first officer noted left side angle of attack transducer was cracked. Maintenance required before dispatch of flight.

Attributes
ACN	159256
Time
Date	199009
Day	Wed
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : bna
State Reference	TN
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	ground : preflight
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument pilot : atp
Experience	flight time last 90 days : 180 flight time total : 5500 flight time type : 3100
ASRS Report	159256
Person 2
Affiliation	company : air carrier
Function	other personnel other
Qualification	other other : other
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	other flight crewa
Resolutory Action	other
Consequence	other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

During exterior inspection I observed the captain angle of attack transducer cracked. The location of this transducer on the medium large transport aircraft is located forward of the main cabin door. The damage was such that it had to be replaced before flight due to a real hazard of it breaking off and entering the left engine. This transducer was most likely damaged when the aircraft was pushed back from the jetway and it probably caught the jetway canopy or some other part of the jetway on the pushback. Corrective action I would suggest is better awareness to both the gate agent (jetway operator) and the pushback crew concerning clearance requirements between the jetway and the aircraft.

Related reports:

• On walkaround preflight check on a DC9 the first officer fou...
• Reporter first officer missed seeing a tear in a deicing boo...
• Md S80 first officer discover tape over 1 static port and ma...

	Enter your search terms Submit search form
	Web www.37000feet.com

Original NASA ASRS Text

Title: ON PREFLT WALK-AROUND INSPECTION FO NOTED LEFT SIDE ANGLE OF ATTACK TRANSDUCER WAS CRACKED. MAINT REQUIRED BEFORE DISPATCH OF FLT.

Narrative: DURING EXTERIOR INSPECTION I OBSERVED THE CAPT ANGLE OF ATTACK TRANSDUCER CRACKED. THE LOCATION OF THIS TRANSDUCER ON THE MLG ACFT IS LOCATED FORWARD OF THE MAIN CABIN DOOR. THE DAMAGE WAS SUCH THAT IT HAD TO BE REPLACED BEFORE FLT DUE TO A REAL HAZARD OF IT BREAKING OFF AND ENTERING THE LEFT ENG. THIS TRANSDUCER WAS MOST LIKELY DAMAGED WHEN THE ACFT WAS PUSHED BACK FROM THE JETWAY AND IT PROBABLY CAUGHT THE JETWAY CANOPY OR SOME OTHER PART OF THE JETWAY ON THE PUSHBACK. CORRECTIVE ACTION I WOULD SUGGEST IS BETTER AWARENESS TO BOTH THE GATE AGENT (JETWAY OPERATOR) AND THE PUSHBACK CREW CONCERNING CLRNC REQUIREMENTS BTWN THE JETWAY AND THE ACFT.

Data retrieved from NASA's ASRS site as of July 2007 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.