ACR MLG ALT DEVIATION UNDERSHOT ALT CROSSING RESTRICTION.

Date: 1988-07 · Aircraft: Medium Large Transport; Low Wing; 2 Turbojet Eng

Anomalies: deviation-altitude-crossing-restriction-not-met

Synopsis

ACR MLG ALT DEVIATION UNDERSHOT ALT CROSSING RESTRICTION.

Narrative

ACR FLT DSNDING FOR LNDG AT PVD. XING RESTRICTION GIVEN BY ZBW WAS 25 NM SW OF PVD AT 11000' AND 250 KTS; ALTIMETER 30.10. WE SLOWLY DEPARTED FL180 AS WE WERE ONLY 10 NM SE OF BRADLEY AT THE TIME WITH ROUTING AS FOLLOWS (BDL 148 DEG R TO WACKY INTXN DIRECT PVD). THIS LEFT APPROX 37 NM DISTANCE TO MAKE THE RESTRICTION. (NO PROB FOR THE MLG.) I; THE F/O; WAS FLYING THE ACFT AND ALSO WROTE DOWN THE CTLR'S INSTRUCTIONS. THE CAPT WAS WORKING THE RADIOS AND READ BACK THE CLRNC EXACTLY AS I HEARD IT; AND ALSO AS I HAD WRITTEN IT DOWN. AFTER APPROX ANOTHER 10 NM THE CTLR ASKED HOW WE WERE COMING WITH THE RESTRICTION. THE CAPT RESPONDED THAT 25 NM SW OF PVD AT 11000' AND 250 KTS WAS NO PROB. THE CTLR THEN SAID THAT THE CLRNC WAS 25 NM SE OF BRADLEY AT 11000' AND 250 KTS. THIS IS DEFINITELY NOT WHAT HE SAID THE FIRST TIME. THE CAPT ADVISED HIM OF SUCH AND SAID THERE WAS NO WAY WE COULD MAKE THAT RESTRICTION; WHAT WOULD HE LIKE US TO DO. HE GAVE US 2 SHORT VECTORS OFF COURSE. ACFT CONFLICT WAS NEVER A PROB. WE ASKED THE CTLR IF THERE WAS A PROB WITH THE INCIDENT AND HE STATED 'NO PROB.' I AM CONVINCED THAT EVEN THOUGH THE CTLR MAY HAVE WANTED US 25 MI SE OF BDL AT 11000'; HE GAVE US THE NORMAL CLRNC FOR THAT AREA OF 25 MI SW OF PVD AT 11000'. MYSELF AND THE CAPT BOTH HEARD THE CLRNC DISTINCTLY AND WE BOTH WROTE IT DOWN AND IT WAS READ BACK AS SUCH. THE CTLR DID NOT DISPUTE OUR READBACK.

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