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A B727 PIC fails to follow the dryheat SID after receiving an amended clearance route change at phx.
| Attributes | |
| ACN | 486480 |
| Time | |
| Date | 200009 |
| Day | Mon |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | navaid : pxr.vortac |
| State Reference | AZ |
| Altitude | msl bound lower : 4000 msl bound upper : 7000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : p50.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | B727 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other vortac |
| Flight Phase | climbout : vacating altitude |
| Route In Use | departure sid : dry heat |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 250 flight time total : 19000 flight time type : 12000 |
| ASRS Report | 486480 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : multi engine pilot : commercial pilot : instrument |
| Events | |
| Anomaly | non adherence : published procedure non adherence : clearance other anomaly other other spatial deviation |
| Independent Detector | other controllera |
| Resolutory Action | none taken : detected after the fact |
| Consequence | faa : reviewed incident with flight crew |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance Chart Or Publication ATC Human Performance |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Flight 1 hour late, no pre departure clearance. At pushback, had to call for clearance. Filed SID was for 'st john' SID, cleared for 'dryheat' SID. Pushed back, perused SID during taxi out for runway 8L. Flight filed from phx to atl (eastbound), cleared for immediate takeoff. Flew to pxr then outbound on 075 degree radial to a DME, then transitioned to 070 degree radial to gilaa intersection. About 1 min later, departure said cleared to intercept 070 degree radial, then immediately another departure voice (supervisor?) asked if this was first clearance to intercept 070 degree radial. I chuckled, said 'yes,' and that 'it was surprising since we were already established on 070 degree radial.' I went back to SID to see that it called for turn to 100 degree heading at a DME off of 075 degrees, for all departures, even ebounds. At handoff to ZAB, I apologized and told departure I misread SID departure procedures. No comment. Remainder of flight uneventful. There were no aircraft conflicts due to my mistake. No TCASII traffic observance. No turns required because of conflicts. I believe my haste to make up time, and misread of SID caused problem. However, the departure instructions on SID makes this procedure very ambiguous and easy to misinterp.
Original NASA ASRS Text
Title: A B727 PIC FAILS TO FOLLOW THE DRYHEAT SID AFTER RECEIVING AN AMENDED CLRNC RTE CHANGE AT PHX.
Narrative: FLT 1 HR LATE, NO PDC. AT PUSHBACK, HAD TO CALL FOR CLRNC. FILED SID WAS FOR 'ST JOHN' SID, CLRED FOR 'DRYHEAT' SID. PUSHED BACK, PERUSED SID DURING TAXI OUT FOR RWY 8L. FLT FILED FROM PHX TO ATL (EBOUND), CLRED FOR IMMEDIATE TKOF. FLEW TO PXR THEN OUTBOUND ON 075 DEG RADIAL TO A DME, THEN TRANSITIONED TO 070 DEG RADIAL TO GILAA INTXN. ABOUT 1 MIN LATER, DEP SAID CLRED TO INTERCEPT 070 DEG RADIAL, THEN IMMEDIATELY ANOTHER DEP VOICE (SUPVR?) ASKED IF THIS WAS FIRST CLRNC TO INTERCEPT 070 DEG RADIAL. I CHUCKLED, SAID 'YES,' AND THAT 'IT WAS SURPRISING SINCE WE WERE ALREADY ESTABLISHED ON 070 DEG RADIAL.' I WENT BACK TO SID TO SEE THAT IT CALLED FOR TURN TO 100 DEG HDG AT A DME OFF OF 075 DEGS, FOR ALL DEPS, EVEN EBOUNDS. AT HDOF TO ZAB, I APOLOGIZED AND TOLD DEP I MISREAD SID DEP PROCS. NO COMMENT. REMAINDER OF FLT UNEVENTFUL. THERE WERE NO ACFT CONFLICTS DUE TO MY MISTAKE. NO TCASII TFC OBSERVANCE. NO TURNS REQUIRED BECAUSE OF CONFLICTS. I BELIEVE MY HASTE TO MAKE UP TIME, AND MISREAD OF SID CAUSED PROB. HOWEVER, THE DEP INSTRUCTIONS ON SID MAKES THIS PROC VERY AMBIGUOUS AND EASY TO MISINTERP.
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.