Air Operations

Hi John,

with the increase of GNSS manipulation (jamming, spoofing). Is there any consideration being giving to implementation of "Commission Implementing Regulation (EU) 2018/1048 of 18 July 2018 laying down airspace usage requirements and operating procedures concerning performance-based navigation". Especially past 2030 with the withdrawal of conventional navigation aids/NPAs/SID/STAR. At this moment we already see issues for example at Gdansk where RW11 only has RNP or VOR available with significant GPS interference occasionally requiring a tailwind approach to the ILS runway which increases exposure to runway excursion events. Especially on a contaminated runway. The regulation considers "Establishment of emergency measures in case of the non-availability of the GNSS signal" however this would most likely just lead to a diversion to a CAT 2/3 available location since jamming can blanket a wide area and can be unpredicable.

Kind regards,

Hi Simon

This is information from the EASA FAQs on this topic - found by using this link (https://www.easa.europa.eu/en/the-agency/faqs/air-operations?check_logg…) with the search term "Reduced Rest". Hopefully this helps.

Question: Reduced rest CS FTL.1.235(b)(3)(ii), (see also ORO.FTL.235 (c) and (e)): Is it possible to reduce the 14h rest away from home base following an FDP involving a 4-hour time difference or more?

Answer: No. CS FTL.1.235 (b)(3)(ii) does not foresee a reduction of the 14h rest away from home base to compensate for time zone crossing.
ORO.FTL.235 (c) describes the conditions under which the minimum rest periods according to ORO.FTL.235 (a) and (b) may be reduced.
ORO.FTL.235 (e) establishes the rest periods to compensate the effects of time zone crossing.
Additional rest periods to compensate the effects of time zone crossing shall be specified in flight time specification schemes.

Hello Recep, according to point (d)(1) of AMC1 CAT.OP.MPA.181 the destination alternate fuel should cover the 'expected' departure routing, routing and arrival routing. If you can reasonably expect a specific alternate routing other than the SID/STAR (you frequently fly to that destination and you've already diverted to the alternate a couple times) why not consider this for the alternate fuel planning? If you do not have any information on the expected routing, you will probably be best advised to plan a more conservative fuel amount. Alternate season's greetings...