Flying - - Training & Technique - BY ROB MARK & JA­SON BLAIR

The lack of ini­tial ap­proach fixes on this plate con­firms that ar­riv­ing air­craft must be in radar con­tact with ATC to ex­e­cute the ap­proach.

A lower step­down alti­tude is avail­able if the pilot is able to iden­tify COROR. It can be iden­ti­fied by us­ing the cross ra­di­als from TEB and DME on the ILS it­self. A note of cau­tion to be sure not to use the DME from the LGA VOR.

Air­craft equipped with FMS, au­topi­lot or HUD ca­pa­bil­i­ties can take ad­van­tage of the lower RVR18 land­ing min­i­mums.

Worth no­tice is that the step­down notes only ap­ply to air­craft shoot­ing the lo­cal­izer ap­proach. On the ILS, the glides­lope would pro­vide alti­tude guid­ance. The ap­proach plate highlights in­struc­tions for an al­ter­nate missedap­proach hold­ing pro­ce­dure after reach­ing GREKO. The plate does not in­di­cate when this al­ter­nate hold might be ef­fec­tive. That means only if it’s as­signed by ATC.

A com­mon ques­tion on missed-ap­proach pro­ce­dures re­lates to al­ti­tudes. When pilots see 800, they might won­der whether that means 800 agl or msl. All al­ti­tudes are given in msl.

While cir­cle-toland min­i­mums ap­ply to a va­ri­ety of air­craft cat­e­gories whether COROR in­ter­sec­tion is present or not, the ap­proach pro­hibits air­craft from cir­cling to Runway 4.


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