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A canadair CL65 was dispatched in non compliance with the right angle of attack sensor heater inoperative into visible moisture and known icing conditions due to management coercion.
| Attributes | |
| ACN | 497090 |
| Time | |
| Date | 200101 |
| Day | Tue |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Environment | |
| Flight Conditions | IMC |
| Weather Elements | Ice Snow |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : ord.tower |
| Operator | common carrier : air carrier |
| Make Model Name | Regional Jet CL65, Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | ground : parked ground : preflight |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : commercial pilot : instrument pilot : multi engine |
| Experience | flight time last 90 days : 200 flight time total : 15000 flight time type : 4000 |
| ASRS Report | 497090 |
| 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 inflight encounter : weather maintenance problem : non compliance with mel non adherence : far non adherence : published procedure |
| Independent Detector | aircraft equipment other aircraft equipment : probe heater failure other flight crewa |
| Resolutory Action | none taken : unable |
| Consequence | other |
| Factors | |
| Maintenance | contributing factor : schedule pressure performance deficiency : repair |
| Supplementary | |
| Problem Areas | Aircraft Company Weather Maintenance Human Performance Environmental Factor Flight Crew Human Performance |
| Primary Problem | Company |
| Situations | |
| Publication | MINIMUM EQUIPMENT LIST |
Narrative:
Directed to fly into overcast icing conditions by the chief pilot with right side angle of attach heater inoperative. QRH procedures on page 11-5 and did not correct the problem. The checklist amplified that the stall warning and windshear recovery guidance system may not be relied upon. MEL page 30-31-1 references 1 angle of attach vane heater may be inoperative provided aircraft is not operated in visible moisture. Aircraft is not operated in known or forecast icing conditions, and aircraft is operated in day VMC only. WX for approach was wind 30 degrees at 15 KTS, visibility 1/2 mi, snow. Temperature 0 degrees C, with dewpoint -1 degrees C.
Original NASA ASRS Text
Title: A CANADAIR CL65 WAS DISPATCHED IN NON COMPLIANCE WITH THE R ANGLE OF ATTACK SENSOR HEATER INOP INTO VISIBLE MOISTURE AND KNOWN ICING CONDITIONS DUE TO MGMNT COERCION.
Narrative: DIRECTED TO FLY INTO OVCST ICING CONDITIONS BY THE CHIEF PLT WITH R SIDE ANGLE OF ATTACH HEATER INOP. QRH PROCS ON PAGE 11-5 AND DID NOT CORRECT THE PROB. THE CHKLIST AMPLIFIED THAT THE STALL WARNING AND WINDSHEAR RECOVERY GUIDANCE SYS MAY NOT BE RELIED UPON. MEL PAGE 30-31-1 REFS 1 ANGLE OF ATTACH VANE HEATER MAY BE INOP PROVIDED ACFT IS NOT OPERATED IN VISIBLE MOISTURE. ACFT IS NOT OPERATED IN KNOWN OR FORECAST ICING CONDITIONS, AND ACFT IS OPERATED IN DAY VMC ONLY. WX FOR APCH WAS WIND 30 DEGS AT 15 KTS, VISIBILITY 1/2 MI, SNOW. TEMP 0 DEGS C, WITH DEWPOINT -1 DEGS C.
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.