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|
Attributes | |
ACN | 444927 |
Time | |
Date | 199907 |
Day | Sat |
Local Time Of Day | 0601 To 1200 |
Place | |
Locale Reference | airport : zzz.airport |
State Reference | FO |
Altitude | msl single value : 5000 |
Environment | |
Light | Daylight |
Aircraft 1 | |
Controlling Facilities | tower : zzz.tower tower : dfw.tower |
Operator | common carrier : air carrier |
Make Model Name | MD-11 |
Operating Under FAR Part | Part 121 |
Navigation In Use | other |
Flight Phase | climbout : initial |
Flight Plan | IFR |
Person 1 | |
Affiliation | company : air carrier |
Function | flight crew : captain oversight : pic |
Qualification | pilot : atp |
ASRS Report | 444927 |
Person 2 | |
Affiliation | company : air carrier |
Function | flight crew : first officer |
Qualification | pilot : multi engine pilot : instrument pilot : commercial |
Events | |
Anomaly | aircraft equipment problem : critical maintenance problem : improper maintenance non adherence : far non adherence : published procedure other spatial deviation |
Independent Detector | aircraft equipment other aircraft equipment : standby airspeed indicator other flight crewa |
Resolutory Action | flight crew : declared emergency none taken : detected after the fact |
Consequence | other |
Factors | |
Maintenance | contributing factor : schedule pressure performance deficiency : inspection performance deficiency : installation performance deficiency : repair performance deficiency : testing |
Supplementary | |
Problem Areas | Aircraft Maintenance Human Performance Company |
Primary Problem | Maintenance Human Performance |
Narrative:
Shortly after rotation the first officer called out no indications on the standby airspeed indictor. We cleaned up leveled at FL50 and sorted out the problem. The standby airspeed indicator was showing 0-60-120 KTS, and quite variable. The standby altimeter was in error by several hundred ft and the standby attitude indicator showed erroneous attitude indications. The decision was made to dump fuel and return. Upon inspection by ZZZ maintenance personnel it was found that the standby pitot static instruments were not even connected. It was also determined that work had been performed on one of the standby instruments the previous night by abc maintenance and it was thought that the connectors had not been put on correctly and had worked themselves loose for our flight. The proper connections and tests were made and the standby attitude indicator was replaced. The instruments performed properly on the way to abc.
Original NASA ASRS Text
Title: AN MD11 ON ROTATION LOST ALL STANDBY PITOT STATIC INSTS, DECLARED EMER, DUMPED FUEL AND RETURNED TO THE FIELD. CAUSED BY INSTS NOT CONNECTED TO THE PITOT STATIC MANIFOLD.
Narrative: SHORTLY AFTER ROTATION THE FO CALLED OUT NO INDICATIONS ON THE STANDBY AIRSPD INDICTOR. WE CLEANED UP LEVELED AT FL50 AND SORTED OUT THE PROB. THE STANDBY AIRSPD INDICATOR WAS SHOWING 0-60-120 KTS, AND QUITE VARIABLE. THE STANDBY ALTIMETER WAS IN ERROR BY SEVERAL HUNDRED FT AND THE STANDBY ATTITUDE INDICATOR SHOWED ERRONEOUS ATTITUDE INDICATIONS. THE DECISION WAS MADE TO DUMP FUEL AND RETURN. UPON INSPECTION BY ZZZ MAINT PERSONNEL IT WAS FOUND THAT THE STANDBY PITOT STATIC INSTS WERE NOT EVEN CONNECTED. IT WAS ALSO DETERMINED THAT WORK HAD BEEN PERFORMED ON ONE OF THE STANDBY INSTS THE PREVIOUS NIGHT BY ABC MAINT AND IT WAS THOUGHT THAT THE CONNECTORS HAD NOT BEEN PUT ON CORRECTLY AND HAD WORKED THEMSELVES LOOSE FOR OUR FLT. THE PROPER CONNECTIONS AND TESTS WERE MADE AND THE STANDBY ATTITUDE INDICATOR WAS REPLACED. THE INSTS PERFORMED PROPERLY ON THE WAY TO ABC.
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.