<< >> NASA ASRS Report 708154, August 2006

A B737-700 had a bird strike report that was cleared by inspection and a test of the upper left pitot tube. Subsequent takeoff was aborted due to 20 KT split between system.

Attributes
ACN	708154
Time
Date	200608
Local Time Of Day	0001 To 0600
Place
Locale Reference	airport : zzz.airport
State Reference	US
Aircraft 1
Controlling Facilities	tower : zzz.tower
Operator	common carrier : air carrier
Make Model Name	B737-700
Operating Under FAR Part	Part 121
Person 1
Affiliation	company : air carrier
Function	maintenance : lead technician
ASRS Report	708154
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Events
Anomaly	aircraft equipment problem : critical maintenance problem : improper maintenance non adherence : far non adherence : published procedure
Independent Detector	other flight crewa other flight crewb
Resolutory Action	flight crew : rejected takeoff
Consequence	other other
Factors
Maintenance	contributing factor : schedule pressure performance deficiency : logbook entry performance deficiency : testing performance deficiency : non compliance with legal requirements
Supplementary
Problem Areas	Maintenance Human Performance Environmental Factor Aircraft Chart Or Publication
Primary Problem	Maintenance Human Performance

Narrative:

Aircraft called in on a through flight reporting they had a bird strike. It was discovered there was a bird strike on the upper l-hand side of the radome. Some of the bird hit the base of the l-hand upper pitot probe. After a bird strike inspection; it was determined that no damage was done to the radome or the pitot probe. No evidence of the bird was in the probe. We disconnected the quick disconnect at the adm and blew low pressure nitrogen through the line to make sure there was no obstruction. The flight crew reported no inbound indication problems. The aircraft was released after no damage was found. No obstructions were found and no inbound indication problems. The aircraft had an aborted takeoff after a 20 KT split was observed. The pitot static test box was used and found no problems in the system. The pitot probe and adm were changed for precautionary reasons.

Related reports:

• B737-700 was inspected for lightning strike damage. Damage f...

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

Original NASA ASRS Text

Title: A B737-700 HAD A BIRD STRIKE RPT THAT WAS CLRED BY INSPECTION AND A TEST OF THE UPPER L PITOT TUBE. SUBSEQUENT TKOF WAS ABORTED DUE TO 20 KT SPLIT BTWN SYS.

Narrative: ACFT CALLED IN ON A THROUGH FLT RPTING THEY HAD A BIRD STRIKE. IT WAS DISCOVERED THERE WAS A BIRD STRIKE ON THE UPPER L-HAND SIDE OF THE RADOME. SOME OF THE BIRD HIT THE BASE OF THE L-HAND UPPER PITOT PROBE. AFTER A BIRD STRIKE INSPECTION; IT WAS DETERMINED THAT NO DAMAGE WAS DONE TO THE RADOME OR THE PITOT PROBE. NO EVIDENCE OF THE BIRD WAS IN THE PROBE. WE DISCONNECTED THE QUICK DISCONNECT AT THE ADM AND BLEW LOW PRESSURE NITROGEN THROUGH THE LINE TO MAKE SURE THERE WAS NO OBSTRUCTION. THE FLT CREW RPTED NO INBOUND INDICATION PROBS. THE ACFT WAS RELEASED AFTER NO DAMAGE WAS FOUND. NO OBSTRUCTIONS WERE FOUND AND NO INBOUND INDICATION PROBS. THE ACFT HAD AN ABORTED TKOF AFTER A 20 KT SPLIT WAS OBSERVED. THE PITOT STATIC TEST BOX WAS USED AND FOUND NO PROBS IN THE SYS. THE PITOT PROBE AND ADM WERE CHANGED FOR PRECAUTIONARY REASONS.

Data retrieved from NASA's ASRS site as of January 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.