GNSS-failure procedures specify DME/DME sensor use for ILS arrivals and IRU with DME/DME sensor use for runway 18 departures.

A5798/26

PERM

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OpsFlight Procedures

GNSS-failure procedures specify DME/DME sensor use for ILS arrivals and IRU with DME/DME sensor use for runway 18 departures.

2026-09-09 00:00 - PERM

Duration:PERMANENT

Period of Applicability

2026-09-09 00:00 - PERM

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Interpretation

For arriving flights conducting an ILS approach, the RNAV DME/DME sensor may be used only following GNSS failure; Chambéry Approach must be notified, and flights must comply with an API slope of 3.5 percent, DA(H) 3,240 (2,470), and RVR 2,400 metres. For runway direction 18 departures, the IRU and DME/DME sensor may be used only following GNSS failure, and Chambéry Tower must be notified. Critical DMEs are CBY, LTP, and LSE.

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Raw NOTAM

A5798/26 NOTAMN
Q) LFMM/QPICH/I /NBO/A /000/999/4538N00553E005
A) LFLB B) 2609090000 C) PERM
E) RNAV EQUIPEMENT :
- ARRIVING FLIGHTS :
ILS APPROACH : USE OF THE DME/DME SENSOR ONLY IN THE EVENT OF A GNSS
FAILURE. NOTIFY CHAMPBERY APPROACH AND STRICTLY ADHERE OF THE FLW
CONDITIONS :
API SLOPE : 3.5 PER CENT
DA (H) = 3240 (2470), RVR = 2400M
CRITICAL DME : CBY, LTP, LSE.
- DEPARTURE FLIGHTS :
IN QFU 18, USE OF IRU AND DME/DME SENSOR ONLY IN THE EVENT OF A GNSS
FAILURE. NOTIFY CHAMBERY TWR.
CRITICAL DME : CBY, LTP, LSE.'
REF: AD2.22

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