{"id":29109,"date":"2025-11-19T06:56:53","date_gmt":"2025-11-19T11:56:53","guid":{"rendered":"https:\/\/ops.group\/blog\/?p=29109"},"modified":"2025-11-19T07:32:43","modified_gmt":"2025-11-19T12:32:43","slug":"delhi-gps-interference-new-pilot-reporting-procedure","status":"publish","type":"post","link":"https:\/\/ops.group\/blog\/delhi-gps-interference-new-pilot-reporting-procedure\/","title":{"rendered":"Delhi GPS Interference: New Pilot Reporting Procedure"},"content":{"rendered":"

India\u2019s DGCA has issued new pilot reporting rules<\/strong> after a week of GPS interference in the Delhi area. <\/strong><\/p>\n

In early November, crews approaching VIDP\/Delhi saw navigation anomalies including false EGPWS warnings, incorrect position data and altitude errors – consistent with GPS spoofing.<\/strong><\/p>\n

\"\"

Image the work of GPSwise<\/a> and SkAI Data Services.<\/p><\/div>\n

Hundreds of flights were affected. ADS-B integrity in the Delhi TMA briefly dropped to zero, leaving ATC unable to rely on GPS-based surveillance. <\/strong><\/p>\n

The timing coincided with the temporary withdrawal of ILS for runway 10\/28<\/strong>, which increased reliance on RNAV procedures.<\/p>\n

The paperwork trail<\/h4>\n

DGCA first outlined its GNSS-interference reporting process in a 2023 Advisory Circular.<\/a><\/p>\n

On 10 Nov 2025, they followed up with a new SOP on GNSS Spoofing<\/a> – which included the \u201creport within 10 minutes\u201d requirement.<\/strong><\/p>\n

Crews flagged parts of it as unclear, so on Nov 17, DGCA issued an Addendum<\/a> to clarify exactly what pilots and operators must do!<\/p>\n

What pilots need to do<\/h4>\n

If interference is detected before<\/span> top of descent:<\/strong><\/p>\n

    \n
  1. Tell ATC as soon as possible.<\/li>\n
  2. Notify your operator\u2019s post holder (responsible manager) by any available means.<\/li>\n
  3. The post holder must then notify DGCA immediately using the form below.<\/li>\n<\/ol>\n

    If interference is detected after<\/span> top of descent, or only discovered after<\/span> landing:<\/strong><\/p>\n

      \n
    1. Report it to the post holder as part of normal post-flight duties.<\/li>\n
    2. The post holder must then notify DGCA using the same form.<\/li>\n<\/ol>\n

      DGCA emphasises that the goal is timely reporting, not enforcement!<\/p>\n

      \"\"<\/a>

      Click for PDF.<\/p><\/div>\n

      What to expect<\/h4>\n

      A reminder that GPSwise (powered by the experts at SkAI Data Services) provides a real time<\/strong> GPS Spoofing and Jamming map<\/strong> spanning the globe. You can access it here<\/a>.<\/p>\n

      Their current data\u00a0shows a steady interference patch northwest of Delhi. It isn\u2019t constant, but it\u2019s there often enough that crews should expect occasional GNSS issues<\/strong> when routing through that area and be ready to cross-check and revert to conventional procedures.<\/p>\n","protected":false},"excerpt":{"rendered":"

      India\u2019s DGCA has issued new pilot reporting rules after a week of GPS interference in…<\/p>\n","protected":false},"author":49,"featured_media":29112,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[361,169,406,1656],"class_list":{"0":"post-29109","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-briefings","8":"tag-delhi","9":"tag-india","10":"tag-jamming","11":"tag-spoofing"},"_links":{"self":[{"href":"https:\/\/ops.group\/blog\/wp-json\/wp\/v2\/posts\/29109","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ops.group\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ops.group\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ops.group\/blog\/wp-json\/wp\/v2\/users\/49"}],"replies":[{"embeddable":true,"href":"https:\/\/ops.group\/blog\/wp-json\/wp\/v2\/comments?post=29109"}],"version-history":[{"count":28,"href":"https:\/\/ops.group\/blog\/wp-json\/wp\/v2\/posts\/29109\/revisions"}],"predecessor-version":[{"id":29166,"href":"https:\/\/ops.group\/blog\/wp-json\/wp\/v2\/posts\/29109\/revisions\/29166"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ops.group\/blog\/wp-json\/wp\/v2\/media\/29112"}],"wp:attachment":[{"href":"https:\/\/ops.group\/blog\/wp-json\/wp\/v2\/media?parent=29109"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ops.group\/blog\/wp-json\/wp\/v2\/categories?post=29109"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ops.group\/blog\/wp-json\/wp\/v2\/tags?post=29109"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}