B737-700 FLT CREW HAND FLY LAS SHEAD RNAV SID; OVERSHOOT SID XING RESTR; REALIZING THE SAME TIME AS L30 DEP CTLR ALERTS THE FLT CREW TO THE OVERSHOOT TO RETURN TO 11000 FT XING RESTR.

2003-11 · NASA ASRS report 600976

Date: 2003-11 · Aircraft: B737-700 · Phase: climb

Anomalies: deviation-altitude-crossing-restriction-not-met|deviation-altitude-overshoot|deviation-discrepancy-procedural-published-material-policy|deviation-discrepancy-procedural-clearance

Synopsis

B737-700 FLT CREW HAND FLY LAS SHEAD RNAV SID; OVERSHOOT SID XING RESTR; REALIZING THE SAME TIME AS L30 DEP CTLR ALERTS THE FLT CREW TO THE OVERSHOOT TO RETURN TO 11000 FT XING RESTR.

Narrative

I WAS HAND FLYING THE SHEAD RNAV 1 DEP OUT OF LAS VEGAS AT NIGHT FROM RWY 25R. WE WERE GIVEN THE CLRNC BY DEP CTL TO 'CLB TO FL190; COMPLY WITH SHEAD RNAV 1 DEP ALT XING RESTRS.' I VERIFIED WITH THE CAPT OUR NEXT XING RESTR ALT AT ROPPR AT OR BELOW 7000 FT; WHICH WE COMPLIED WITH. PASSING ROPPR; I THEN VERIFIED WITH THE CAPT OUR XING RESTR ALT OF MDDOG AT 9000 FT; WHICH WE ALSO COMPLIED WITH. WE WERE NOW TRACKING TO THE TARKK WAYPOINT IN LNAV AND VNAV SPD CLBING AT APPROX 4000 FPM. AT APPROX 11200 FT; LAS VEGAS DEP INSTRUCTED US TO DSND IMMEDIATELY TO 11000 FT FOR OPPOSITE TFC; WHICH WE HAD IN SIGHT. AT ABOUT THE SAME TIME DEP CTL GAVE THEIR INSTRUCTIONS; THE FLT DIRECTOR TRANSITIONED FROM VNAV SPD TO VNAV PATH AS WE CROSSED OVER THE TARKK WAYPOINT. TARKK WAYPOINT HAS A XING RESTR OF 11000 FT AND I IMMEDIATELY DSNDED DOWN TO 11000 FT. ALTHOUGH I BRIEFED THIS RNAV DEP ON THE GND WITH THE CAPT; INCLUDING WAYPOINT NAMES AND XING RESTRS; I NEGLECTED TO VERIFY THE XING RESTR AT TARKK AFTER WE PASSED MDDOG WHILE I WAS HAND FLYING THE CLBOUT. THERE ARE MULTIPLE XING RESTR ALTS ON THE SHEAD RNAV 1 DEP. AND AS A RESULT; FOR FUTURE PURPOSES; I WILL FLY THIS PROC WITH THE AUTOPLT ENGAGED TO REDUCE THE WORKLOAD ASSOCIATED WITH THIS RNAV DEP AND KEEP A CAREFUL WATCH ON THE FLT DIRECTOR. SUPPLEMENTAL INFO FROM ACN 600975: I; AS THE PNF; MADE A COMPLETE READBACK OF THAT; AS WELL AS ALL OTHER CLRNCS. AS WE CLBED THROUGH 10000 FT MSL; I CALLED 10000 FT FOR 11000 FT; 1000 FT TO GO; AND PROCEEDED TO COMPLETE THE 'OUT OF 10000 FT' FLOW. I THEN LOOKED BACK THROUGH THE HUD DISPLAY AS WE WERE NOW APCHING TARRK; AND NOTICED THAT WE WERE JUST NOW CLBING THROUGH 11000 FT; WHEREUPON I PLACED MY HANDS ON THE YOKE CTL AND PUSHED THE CTL FORWARD TO ARREST OUR CLB; AND AT THE SAME TIME TOLD THE FO TO STOP THE CLB. AT THIS MOMENT; ATC INSTRUCTED US TO DSND AND MAINTAIN 11000 FT. FO EXCLAIMED; 'OH SHOOT; I'M SORRY; I WAS FLYING ON THE FLT DIRECTOR AND FOLLOWING THE COMMANDS.' WE WERE GIVEN A TELEPHONE NUMBER AND INSTRUCTED TO CALL THIS NUMBER FOR 'POSSIBLE ATC VIOLATION.' I CONSIDERED WHETHER THE FLT DIRECTORS HAD MISBEHAVED; BUT WAS SATISFIED THAT THIS IS SOMETHING THAT I SEE VERY OFTEN. OUR FINAL CONCLUSION WAS THAT PERHAPS HE SHOULD HAVE BEGUN LEVELOFF; AGAINST THE COMMANDS OF THE FLT DIRECTOR; AS HE XCHKED THE INSTS AND SAW THAT WE WERE APCHING THE REQUIRED LEVELOFF ALT. LAS DEP CTL STATED THAT THEY HAD NOTICED MANY ALT PROBS SINCE THE PROC HAD BEEN DESIGNED AND SUGGESTED THAT ALL RNAV ARR AND DEP PROCS BE FLOWN BY THE AUTOPLT; RATHER THAN BY HAND FLYING IN HOPES OF AVOIDING THIS SIT IN THE FUTURE. IN REFLECTION; I FEEL THAT THE AUTOPLT COULD HAVE PROVIDED A BETTER; AND SAFER; DEP THAN HAND FLYING.

Source: NASA Aviation Safety Reporting System (public domain). Reports are voluntary submissions and are not verified by NASA.

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