why ILS U/S if the ALS Out?

[mjkim]

Hello All,

According to NOTAM of RPLL, Why the ILS U/S?

As I know if the ALS out in MNL APO, only the minima will be calculated higher than normal ops .

so I can't understand why the ILS U/S notam Issued.

Would you please let me know?B0206/19 NOTAMN
Q) RPHI/QPIAU/I /NBO/A /000/999/1431N12101E005
A) RPLL B) 1901181309 C) 1901312200
E) IAP ILS OR LOC RWY06 SUSPENDED DUE RWY06 APCH LGT U/S.

[custardpsc]

No obvious reason. You are right about the minima. Maybe some parts working and some parts not working. ALS needed to help judge visibility ( where you break out relative to the cross bar lights). May also be that ( for example) the static lights are working but the REIL isn't. No minima published for that situation. Or a brightness problem that might give an optical illusion. But, yes, it doesn't make it clear what the problem is

[custardpsc]

I just had a look at the NOTAMS - part of the lighting system is U/S due to work in progress. There is also a notam for temporary runway lengths change, looks like works at the threshold. So, lots of reasons for suspending use of the ILS - only partial lighting, displaced threshold relative to the glide slope, and possible bending of the localiser/glide slope due to machinery / trucks inside the ILS exclusion area.

B0207/19 - THR LGT RWY06 LTD (THR INSET LGT U/S, WBAR SVCBL)
DUE WIP (RWY06/24 ASPH OVERLAY).
TEMPO ELEV THR LGT INSTL.

B0222/19 - TEMPO DECLARED DIST:
RWY TORA TODA ASDA LDA
06 3089M 3200M 3200M 3410M
24 3410M 3588M 3410M 3410M