Temporary crane obstacles near RWY 4R affecting RNAV (GPS) approach.

5/9344

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Instrument Landing Systems

2025-02-03 17:00 - 2025-03-14 23:00

Period of Applicability

2025-02-03 17:00 - 2025-03-14 23:00

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Interpretation

Temporary cranes reaching up to 853 MSL and 788 MSL are located within proximity of RWY 4R, impacting the RNAV (GPS) approach. Adjustments are required for LNAV/VNAV visibility requirements in case of inoperative ALS. Helicopter visibility reduction below RVR 4000 is not authorized.

Message

IAP CHICAGO O'HARE INTL, CHICAGO, IL. RNAV (GPS) RWY 4R, AMDT 1D... LNAV/VNAV DA 1170/HAT 509 ALL CATS, VIS RVR 5500 ALL CATS. RWY 4R HELICOPTER VISIBILITY REDUCTION BELOW RVR 4000 NOT AUTHORIZE...

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Raw NOTAM

Q) KZAU/QPIXX/I/NBO/A/000/999/4158N08754W005
A) KORD
B) 2501312132
C) 2509122127EST
E) ORD CHICAGO O'HARE INTL, CHICAGO, IL.
RNAV (GPS)  RWY 4R, AMDT 1D...
LNAV/VNAV DA 1170/HAT 509 ALL CATS, VIS RVR 5500 ALL CATS.
RWY 4R HELICOPTER VISIBILITY REDUCTION BELOW RVR 4000 NOT AUTHORIZED. 
FOR INOPERATIVE ALS, INCREASE LNAV/VNAV ALL CATS VISIBILITY TO 1 3/8 SM.
TEMPORARY CRANES, UP TO 853 MSL, BEGINNING 4873FT WEST OF RWY 4R (2024-AGL-15026 THRU 15035-NRA AND 2024-AGL-15051 THRU 15059-NRA), TEMPORARY CRANE 788 MSL 5934FT SW OF RWY 4R (2024-AGL-13315-OE).

Issued at: 2025-02-03 16:53