TRAINING C172 WAS CLRED INTO POS BEHIND A DEPARTING ACR B737. THE C172 WENT ONTO THE RWY AT AN INTXN IN FRONT OF THE B737 ON TKOF ROLL. THE ACR ABORTED TKOF. THE LCL CTLR DID NOT SEE THE C172 GO ONTO THE RWY DUE TO POOR TWR VISIBILITY AT THAT INTXN. AN INTXN DEP HAD NOT BEEN ISSUED BY THE GND CTLR.

1997-04 · NASA ASRS report 365799

Date: 1997-04 · Aircraft: B737 Undifferentiated or Other Model · Phase: takeoff

Anomalies: atc-issue-all-types|conflict-ground-conflict|critical|other-unspecified

Synopsis

TRAINING C172 WAS CLRED INTO POS BEHIND A DEPARTING ACR B737. THE C172 WENT ONTO THE RWY AT AN INTXN IN FRONT OF THE B737 ON TKOF ROLL. THE ACR ABORTED TKOF. THE LCL CTLR DID NOT SEE THE C172 GO ONTO THE RWY DUE TO POOR TWR VISIBILITY AT THAT INTXN. AN INTXN DEP HAD NOT BEEN ISSUED BY THE GND CTLR.

Narrative

I HAD CLRED ACFT #1 FOR TKOF ON RWY 26R. THE NEXT ACFT IN THE DEP SEQUENCE WAS ACFT #2. I ASKED ACFT #2 IF HE WAS READY FOR DEP AND HE GAVE AN AFFIRMATIVE RESPONSE. I THEN TOLD ACFT #2 TO TAXI INTO POS AND HOLD ON THE SAME RWY THAT ACFT #1 WAS DEPARTING (RWY 26R). ACFT #2 SUBSEQUENTLY TAXIED ONTO THE RWY AT AN INTXN IN FRONT OF THE DEPARTING B737. THE FLC OF THE B737 SAW THE CESSNA ENTERING THE RWY AND REJECTED THE TKOF. THE TWR VISIBILITY AT THIS PARTICULAR INTXN IS POOR TO NIL. AT NIGHT THE INTXN B-11 IS NEARLY IMPOSSIBLE TO SEE. THIS EVENT OCCURRED WHEN THE LINEUP OF DEPS WAS STRETCHED FROM THE END OF THE RWY TO A POINT NEARLY 3000 FT DOWN THE TXWY. THIS CESSNA DECIDED TO PULL INTO THE INTXN B-11 TO 'GET OUT OF THE WAY OF THE BIG BOYS.' HE WAS INSTRUCTED BY GND TO TAXI TO RWY 26R AND NO MENTION WAS GIVEN TO HIM BY ANYONE TO GO TO AN INTXN. THE LARGE ACFT LINED UP ON TXWY B OBSCURED MY VISION OF THE INTXN. AS A MATTER OF FACT; WHEN THE B737 FLC TOLD ME THAT A CESSNA HAD JUST TAXIED ONTO THE RWY I STILL HAD A DIFFICULT TIME SEEING THE ACFT. THE TWR IS APPROX 1.3 TO 1.5 MI FROM THIS INTXN AND THE VIEW AT NIGHT IS MOSTLY BLINKING AND STEADY LIGHTS OF VARIOUS COLORS. YOU HAVE RWY LIGHTS; TXWY LIGHTS; RWY THRESHOLD LIGHTS; LIGHTS MOUNTED ON TOP OF HANGARS; LIGHTS MOUNTED ON TOP OF TERMINAL 4; STREET LIGHTS IN THE BACKGROUND; AND ALL THE ASSOCIATED LIGHTS OF APPROX 3-4 ACRS; WHO ARE DIRECTLY IN MY LINE OF SIGHT; WAITING ON THE TXWY IN THE DEP SEQUENCE. THAT'S WHAT YOU SEE WHEN YOU LOOK AT THE THRESHOLD OF RWY 26R AT NIGHT. MISCOM IS A FACTOR. IF THE PLT KNEW CTLR AND PLT PHRASEOLOGY; HE WOULD HAVE ASKED FOR A DEP AT THE INTXN AND THE CTLR WOULD EITHER APPROVE OR DENY HIS REQUEST. AGAIN; IF HE KNEW THE PROPER PHRASEOLOGY HE WOULD HAVE KNOWN THAT SOMETHING WAS WRONG AND WOULD HAVE QUESTIONED MY CTL INSTRUCTIONS. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR ALLEGED THE INCIDENT WAS HANDLED AS A PLTDEV SINCE THE PLT WAS INSTRUCTED TO TAXI TO THE RWY WITHOUT REF TO AN INTXN DEP. RPTR INDICATED THAT PHX DOES NOT ALLOW INTXN DEPS AT NIGHT IN ORDER TO AVERT A SIT SIMILAR TO THE NIGHT TIME INCIDENT THAT OCCURRED AT LAX ARPT. RPTR SAID THAT THE RWY HOLD LINES WERE MOVED BACK FROM THE RWYS AND INDICATED THAT THIS MAY HAVE CONTRIBUTED TO THE POOR LINE OF SIGHT VISIBILITY WHEN ACR TFC IS HOLDING NEAR OR PASSING THE B11 INTXN. RPTR SAID THAT THE CFI IN THE C172 THOUGHT THE TWR WANTED THE SMALL ACFT TO USE THE INTXN FOR DEP IN ORDER TO STAY OUT OF THE WAY OF THE ACR ACFT. RPTR NOTED THAT SOMEONE FROM THE FACILITY HAS TALKED WITH THE FBO OPERATORS TO LET THEM KNOW THEY ARE NOT TO USE AN INTXN FOR DEP AT NIGHT. RPTR INDICATED THERE WERE NO SIGNS INFORMING THE PLTS AT ANY OF THE GA OPS THAT THE FULL LENGTH OF THE RWYS WOULD BE USED AT NIGHT.

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

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