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A B737-400 was dispatched in non compliance with the #2 air data computer static and pitot hoses not connected resulting in a rejected takeoff.
| Attributes | |
| ACN | 435499 |
| Time | |
| Date | 199904 |
| Day | Fri |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : sdf.tower |
| Operator | common carrier : air carrier |
| Make Model Name | B737-400 |
| Flight Phase | ground : parked ground : maintenance |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Qualification | technician : powerplant technician : airframe |
| Experience | maintenance technician : 15 |
| ASRS Report | 435499 |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper maintenance non adherence : far non adherence : published procedure |
| Independent Detector | aircraft equipment other aircraft equipment : f/o airspeed indicator |
| Resolutory Action | flight crew : rejected takeoff |
| Consequence | other other |
| Factors | |
| Maintenance | performance deficiency : testing performance deficiency : installation performance deficiency : inspection |
| Supplementary | |
| Problem Areas | Maintenance Human Performance |
| Primary Problem | Maintenance Human Performance |
Narrative:
High workload, low manpwr, time constraints. Callback conversation with reporter revealed the following information: the reporter stated the cause of the rejected takeoff was no indicated airspeed on the first officer's airspeed indicator. The reporter said after the air data computer was replaced the static pressure hose and the pitot pressure hose were not connected to the air data computer. The reporter said with the hoses off no valid air data information was available for instrumentation.
Original NASA ASRS Text
Title: A B737-400 WAS DISPATCHED IN NON COMPLIANCE WITH THE #2 AIR DATA COMPUTER STATIC AND PITOT HOSES NOT CONNECTED RESULTING IN A REJECTED TKOF.
Narrative: HIGH WORKLOAD, LOW MANPWR, TIME CONSTRAINTS. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THE CAUSE OF THE REJECTED TKOF WAS NO INDICATED AIRSPD ON THE FO'S AIRSPD INDICATOR. THE RPTR SAID AFTER THE AIR DATA COMPUTER WAS REPLACED THE STATIC PRESSURE HOSE AND THE PITOT PRESSURE HOSE WERE NOT CONNECTED TO THE AIR DATA COMPUTER. THE RPTR SAID WITH THE HOSES OFF NO VALID AIR DATA INFO WAS AVAILABLE FOR INSTRUMENTATION.
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.