MEM APCH CTLR EXPRESSED FRUSTRATION REGARDING ZME CTLR'S TECHNIQUE DURING ARR FEED FOR MEM ARPT AND REQUIRED HVY SEPARATION.

Date: 2005-04 · Aircraft: Commercial Fixed Wing

Anomalies: deviation-discrepancy-procedural-far|other-ctlr-technique

Synopsis

MEM APCH CTLR EXPRESSED FRUSTRATION REGARDING ZME CTLR'S TECHNIQUE DURING ARR FEED FOR MEM ARPT AND REQUIRED HVY SEPARATION.

Narrative

THIS COMPLAINT IS ANOTHER OF A TYPE PREVIOUSLY RPTED. ZME 'FEEDS' ENRTE ACFT INTO MEM APCH AIRSPACE VIA THE '4 CORNERPOST' SYS. ON A DAILY BASIS AND 'ANYTIME' HVY ACFT ARE INVOLVED; ANY OF THE 4 SECTORS WILL 'DRIVE' TRAILING ACFT INTO A 'LESS THAN REQUIRED' WAKE TURB IN-TRAIL SEPARATION SIT BEHIND A HVY JET. THIS ALSO HAPPENS WITH LARGE JET ACFT. THIS 'TECHNIQUE' USED BY ZME IS THEIR METHOD OF 'STANDARD IN-TRAIL' SEPARATION. ZME WILL INSTRUCT JET AND PROP ACFT TO 'GO FAST' AS THEY'RE ENTERING APCH AIRSPACE. THIS IS A USELESS TECHNIQUE BECAUSE THE ACFT MUST SLOW DOWN AND START THE DSCNT AND RADAR VECTORS FOR REQUIRED RADAR SPACING FROM APCH TO THE FINAL CTL POS. ZME WILL INSTRUCT JET AND HVY JET ACFT TO 'RESUME NORMAL SPD' JUST AS THEIR RADIO FREQS ARE CHANGED TO MEM APCH CTL. THE HVY JETS WILL SLOW DOWN RAPIDLY ON THEIR OWN; ESPECIALLY ON THE 'SHORT SIDE' OR BASE LEG FEED TO THE FINAL CTLRS. EVERY HVY JET PLT HAS TOLD ME THAT TO SLOW DOWN AND DSND IS VERY DIFFICULT IF NOT IMPOSSIBLE. THIS IS THE CASE WITH ACR X HVY DC10/MD11'S. IT IS COMMON FOR ZME TO 'FORCE FEED' MEM APCH SEVERAL JETS IN-TRAIL OF A HVY AND HAVE THE TRAILING JETS GO FAST. BECAUSE OF THE WAY THE STAR TRANSITIONS FEED INTO THE ARR GATES ZME USES 'GO FAST' SPDS KNOWING THAT AS SOON AS THE ACFT CROSSES THE 40 NM 'XFER OF CTL POINT' APCH WILL DSND THE ARR ACFT. THIS IS ESPECIALLY TRUE FOR THE SHORT SIDE/BASE LEG FEED. THIS CAUSES THE USUAL 10 NM JET IN-TRAIL SPACING TO DECREASE TO MINIMUM RADAR SEPARATION. THIS BECOMES EVEN MORE UNSATISFACTORY FOR JET ACFT OPERATING BEHIND A HVY JET. THE STARS SHOULD BE REWORKED TO ESTABLISH 'ONE' IN-TRAIL FEED AS THEY ENTER MEM AIRSPACE/XING THE XFER OF CTL POINT. ZME THINKS NOTHING ABOUT GIVING MEM APCH OF 'CUT OFF' WITH JET ACFT AS THEY ENTER OUR AIRSPACE. ZME CONTINUES TO ONLY SWITCH ACFT FREQS TO MEM AS 'THEY CROSS THE XFER OF CTL POINT.' THIS LACK OF RESPECT AND VIOLATION OF THE FAA HANDBOOK 7110.65 WHICH REQUIRES ACFT TO BE ON THE NEXT FACILITY'S FREQS BEFORE THEY ENTER THE NEXT AIRSPACE ONLY ENSURES TO 'PROTECT' THEMSELVES FROM A POSSIBLE ERROR. ACTION MUST BE TAKEN TO BRING ZME'S POOR JET N-TRAIL SPACING AND TECHNIQUES TO THEIR ATTN. I SENSE THAT ZME MGMNT HAS NO CTL OVER THE ZME CTLRS. DURING THE PERIOD THAT I WORKED THE APCH POS; I HAD TO SLOW AND GIVE AN IMMEDIATE RADAR VECTOR TO MAINTAIN 'MINIMUM' RADAR WAKE TURB SEPARATION. WE'RE HANDED THIS TYPE OF SIT SEVERAL TIMES A DAY.

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