CHART WISE

A COM­PLI­CATED SIM­PLE PRO­CE­DURE

Flying - - CONTENTS - By Rob Mark

Mil­wau­kee ILS/LOC Rwy 1L, a com­pli­cated sim­ple ap­proach

A. SIDE­STEP MIN­I­MUMS

This ap­proach to Run­way 1L of­fers spe­cial min­i­mums for a "side­step" ma­neu­ver to Mil­wau­kee’s par­al­lel Run­way 1 Right. Es­sen­tially that means fly­ing the ap­proach to Run­way 1L, break­ing out of the clouds and mak­ing a turn off course to ac­tu­ally land on Run­way 1R. This ma­neu­ver is rec­om­mended only for air­craft ca­pa­ble of land­ing on Run­way 1R’s short 4,183-foot sur­face. Note that a side­step doesn't bring the air­craft down to the low­est ILS min­i­mums, but it does al­low a pi­lot to de­scend lower than cir­cle-to-land min­i­mums. Side­step is some­times used when a slower air­craft is be­ing over­taken by a faster air­craft, and al­lows ATC to cre­ate greater sep­a­ra­tion be­tween air­craft us­ing the same ILS pro­ce­dure. Two dif­fer­ent touch­down zone el­e­va­tions (TDZE) are noted in the pro­file view. Run­way 1 Left is 708 feet msl, and Run­way 1 Right is 678 feet msl.

B. TWO PO­TEN­TIAL MISSEDAPPROACH PRO­CE­DURES

The pri­mary missed ap­proach calls for the pi­lot to pro­ceed to Badger (BAE) VOR and hold, us­ing ei­ther a VOR or IFR GPS. But an "al­ter­nate" missed ap­proach also ex­ists that uses the Falls (FAH) VOR and Tim­mer­man (LJT) VOR. This sec­ond MAP might be used when BAE is in­op­er­a­tive or when ATC needs to send mul­ti­ple air­craft to holds and prefers sep­a­rate lo­ca­tions to send them to. As al­ways, check no­tams for up­dates be­cause more and more VORs are be­ing re­moved from ser­vice across the coun­try.

C. IN­NER MARKER

Some pilots to­day might not remember that IM refers to an in­ner marker bea­con that func­tions as a dis­tance marker. The in­ner marker is lo­cated about 200 feet from the run­way thresh­old and is used only on Cat II and III pro­ce­dures. The pi­lot will see a white flash­ing light on the marker bea­con dis­play when cross­ing the in­ner marker, as well as hear an au­dio sig­nal in their head­phones.

D. LOC MISSEDAPPROACH POINTS

Note that the missed-ap­proach point when ex­e­cut­ing a lo­cal­ize­ronly ap­proach, ei­ther by choice or be­cause the glides­lope has be­come un­us­able, is dif­fer­ent from when fly­ing it as a full ILS. In this case, DME and time iden­tify the missed-ap­proach point for a pi­lot fly­ing the lo­cal­izer pro­ce­dure. Be­cause the ac­tual DME trans­mit­ter is not co-lo­cated with the end of the run­way, cock­pit equip­ment should in­di­cate 2.0 DME when over the run­way end. The DME is avail­able through the same fre­quency as the lo­cal­izer, noted by the "IMKE" in­di­ca­tion un­der the DME ILS/DME along the ap­proach path.

E. "D-ATIS"

"D-ATIS" in­di­cates this is a dig­i­tal ATIS. That trans­lates into a com­puter voice broad­cast­ing the weather de­tails, not a hu­man air traf­fic con­troller, so be pre­pared for a voice that sounds like the HAL 9000 com­puter from 2001: A Space Odyssey.

F. WANT LOWER AP­PROACH MIN­I­MUMS?

Air­craft equipped with a head-up dis­play, a flight di­rec­tor or an ap­proach-ca­pa­ble au­topi­lot may take ad­van­tage of re­duced ap­proach min­i­mums, num­bers less than the stan­dard 2,400-foot run­way vis­ual range. That equip­ment al­lows for a touch­down in a 1,800-foot RVR, equiv­a­lent to about three-eights of a mile vis­i­bil­ity.

G. PAR­AL­LEL RUN­WAYS AND TWO LIGHT­ING SYS­TEMS

The pri­mary ap­proach Run­way 1L uses an ALSF-II run­way light sys­tem com­bined with a PAPI. Notes be­neath the missedapproach de­scrip­tion in­di­cate that Run­way 1R uses a REIL sys­tem to point out the run­way’s end. Pilots must ex­er­cise cau­tion in low vis­i­bil­ity or night con­di­tions to en­sure they’re head­ing for the cor­rect run­way. This could be a se­ri­ous prob­lem since Run­way 1R is much shorter than 1L. Ap­proach min­i­mums for "ALS out" are dif­fer­ent as well, in­creas­ing if any of the ALS sys­tem components are in­op­er­a­tive.

H. AUTHORIZATIONS

Note this pro­ce­dure is not autho­rized for air­craft ar­riv­ing in the Mil­wau­kee area from the BAE VOR air­way ra­di­als R085 clock­wise to R191. Mov­ing clock­wise, that elim­i­nates air­craft ar­riv­ing on V30, V170, V191 and V227.

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