Narrative:

Port au prince center cleared us from present position (30 mi southeast of obn VOR) down to 12000 ft. A couple of mins later, he cleared us for the kenok 1A arrival. We confirmed the clearance. We followed our STAR chart including radials, fixes and stepdown altitudes. When center switched us to approach, we reported our altitude when checking in. The approach controller questioned our descent below 12000 ft. We reiterated our clearance for the arrival from the previous controller. Approach told us to maintain 9000 ft until we were cleared for the ganiv ILS 9 approach. The controllers should be clrer with instruction when they differ from the written STAR.

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Original NASA ASRS Text

Title: PORT AU PRINCE (MTEG) CTR CLRED B727 CREW TO FOLLOW ARR PROC WHICH SURPRISED APCH CTLR (MTPP) WHO EXPECTED THE ACFT AT A HIGHER ALT.

Narrative: PORT AU PRINCE CTR CLRED US FROM PRESENT POS (30 MI SE OF OBN VOR) DOWN TO 12000 FT. A COUPLE OF MINS LATER, HE CLRED US FOR THE KENOK 1A ARR. WE CONFIRMED THE CLRNC. WE FOLLOWED OUR STAR CHART INCLUDING RADIALS, FIXES AND STEPDOWN ALTS. WHEN CTR SWITCHED US TO APCH, WE RPTED OUR ALT WHEN CHKING IN. THE APCH CTLR QUESTIONED OUR DSCNT BELOW 12000 FT. WE REITERATED OUR CLRNC FOR THE ARR FROM THE PREVIOUS CTLR. APCH TOLD US TO MAINTAIN 9000 FT UNTIL WE WERE CLRED FOR THE GANIV ILS 9 APCH. THE CTLRS SHOULD BE CLRER WITH INSTRUCTION WHEN THEY DIFFER FROM THE WRITTEN STAR.

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.