ADS-B · METAR · EU261 / DOT / DGCA
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All carrier audits

Delta

N842DN lagged across BOS→ATL→ORD→DTW before JFK even saw clouds — with zero FAA GDP active.

USA · Transcontinental Hub · US DOT 14 CFR Part 259 & Part 260 · FAA NAS Ground Delay Cross-Check + FAR 117

58.2%

of Delta “bad weather” excuses rebutted on telemetry

380 audited flights · 63% originally blamed weather/ATC · Flagship trace: DL-418 · JFK → LAX

False ATC / Flow Claim35.8%
4-Leg Hub Cascade29.4%
FAR 117 Crew Expiry19.2%
Tarmac Hold > 3h9.1%
Denied Boarding / Downgrade6.5%

US legacy hub-and-spoke fleets frequently cite ambiguous "ATC flow / en-route weather" despite clear local METARs and unthrottled FAA National Airspace System departures. AirTruth audits FAA GDP notices, FAR 117 reserve rosters, and 4 prior sectors.

Radar findings & monthly rebuttal share

Rebutted weather exemptions across audited sectors

Verified against METAR VMC & parallel runway departures

0%40%80%Jan 26Mar 26May 26Jul 26Sept 26Nov 26Nov 26: 69.2% rebutted

Zero active FAA Ground Delay Program on 58% of transcontinental departures labeled "ATC weather restriction".

FAR 117 reserve crew shortages triggered 3+ hour US DOT Part 260 automatic cash-refund eligibility windows.

Signed Mode-S transponder logs eliminated disputed pushback vs scheduled block timestamps.

How the statutory contradiction unfolds

TimelineDetectorVerified Record
06:35 EST (Leg 1)Inbound Tech DelayN842DN deferred APU valve swap in Boston; +80m slip propagated 4 legs.
12:15 ESTFAA NAS AuditZero FAA GDP active at KJFK; 8 departures off RWY 22R under FEW045 VMC.
13:15 ESTUS DOT Packet SealedFull 14 CFR §260 cash refund / $650 claim packet sealed with 5 ADS-B fixes.