Squawk 7700 transmission — UAL661

UAL661 (United Airlines) was operating from KORD to KLAX on 2026-07-09. SkyMeter recorded a 7700 transponder transmission at 06:57 UTC. Code 7700 indicates a general emergency declaration (e.g. engine, medical, smoke). A sustained transmission is normally accompanied by ATC priority handling. Trace data at the event: 36354 ft AGL, 454 kt GS. Approach stability score: 68/100. Scores in this band occur on roughly 10-15% of approaches at this runway, with multiple gates outside the per-runway envelope. METAR at the time reported 5 kt wind. Detection algorithm and known limitations: see SkyMeter methodology.

• SECURITY6/4134 2026-06-01 00:00Z – 2026-07-20 23:59Z

  TULSA, OK, Monday, June 1, 2026 through Monday, July 20, 2026 UTC

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• SECURITY6/3996 2026-06-01 00:00Z – 2026-07-20 23:59Z

  OKLAHOMA CITY, OK, Monday, June 1, 2026 through Monday, July 20, 2026 UTC

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• SECURITY6/3954 2026-06-01 00:00Z – 2026-07-20 23:59Z

  STILLWATER, OK, Monday, June 1, 2026 through Monday, July 20, 2026 UTC

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• SECURITY6/4022 2026-06-01 05:00Z – 2026-07-21 04:59Z SFC–400 ft

  OKLAHOMA CITY, OK, Monday, June 1, 2026 through Monday, July 20, 2026 Local

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• SECURITY6/3952 2026-06-01 05:00Z – 2026-07-21 04:59Z SFC–400 ft

  Stillwater, OK, Monday, June 1, 2026 through Monday, July 20, 2026 Local

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• SECURITY6/4157 2026-06-01 05:00Z – 2026-07-21 04:59Z SFC–400 ft

  PRAIRIE VILLAGE, KS, Monday, June 1, 2026 through Monday, July 20, 2026 Local

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• SECURITY6/4162 2026-06-01 05:00Z – 2026-07-21 04:59Z SFC–400 ft

  Kansas City, MO, Monday, June 1, 2026 through Monday, July 20, 2026 Local

  View FAA NOTAM →
• SECURITY6/4161 2026-06-01 05:00Z – 2026-07-21 04:59Z SFC–400 ft

  St, Louis, MO, Monday, June 1, 2026 through Monday, July 20, 2026 Local

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• SECURITY6/4155 2026-06-01 05:00Z – 2026-07-21 04:59Z SFC–400 ft

  Riverside, MO, Monday, June 1, 2026 through Monday, July 20, 2026 Local

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• SECURITY6/4154 2026-06-01 05:00Z – 2026-07-21 04:59Z SFC–400 ft

  Kansas City, KS, Monday, June 1, 2026 through Monday, July 20, 2026 Local

  View FAA NOTAM →
• SECURITY6/4151 2026-06-01 05:00Z – 2026-07-21 04:59Z SFC–400 ft

  Kansas City, MO, Monday, June 1, 2026 through Monday, July 20, 2026 Local

  View FAA NOTAM →
• SECURITY6/4149 2026-06-01 05:00Z – 2026-07-21 04:59Z SFC–400 ft

  Lawrence, KS, Monday, June 1, 2026 through Monday, July 20, 2026 Local

  View FAA NOTAM →
• SECURITY6/3997 2026-06-01 05:00Z – 2026-07-21 04:59Z SFC–400 ft

  NORMAN, OK, Monday, June 1, 2026 through Monday, July 20, 2026 Local

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• SECURITY6/4146 2026-06-01 05:00Z – 2026-07-21 04:59Z SFC–400 ft

  Lawrence, KS, Monday, June 1, 2026 through Monday, July 20, 2026 Local

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• SECURITY6/4141 2026-06-01 05:00Z – 2026-07-21 04:59Z SFC–400 ft

  Tulsa, OK, Monday, June 1, 2026 through Monday, July 20, 2026 Local

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• SECURITY6/4135 2026-06-01 05:00Z – 2026-07-21 04:59Z SFC–400 ft

  CLAYTON, MO, Monday, June 1, 2026 through Monday, July 20, 2026 Local

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• SECURITY6/4206 2026-06-01 05:00Z – 2026-07-21 04:59Z SFC–400 ft

  Kansas City, MO, Monday, June 1, 2026 through Monday, July 20, 2026 Local

  View FAA NOTAM →
• SECURITY6/4164 2026-06-01 06:00Z – 2026-07-21 05:59Z SFC–400 ft

  Sandy, UT, Monday, June 1, 2026 through Monday, July 20, 2026 Local

  View FAA NOTAM →
• SECURITY6/4167 2026-06-01 06:00Z – 2026-07-21 05:59Z SFC–400 ft

  Salt Lake City, UT, Monday, June 1, 2026 through Monday, July 20, 2026 Local

  View FAA NOTAM →
• SECURITY6/4189 2026-06-01 07:00Z – 2026-07-21 06:59Z SFC–400 ft

  Los Angeles, CA, Monday, June 1, 2026 through Monday, July 20, 2026 Local

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• HAZARDS6/0608 2026-06-25 13:00Z – 2026-07-09 03:00Z SFC–14,000 ft

  15NM W LOS ALAMOS, NM, Thursday, June 25, 2026 through Thursday, July 9, 2026 UTC

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• HAZARDS6/0842 2026-06-26 14:00Z – 2026-07-09 03:00Z SFC–10,500 ft

  13NM SW FLAGSTAFF, AZ, Friday, June 26, 2026 through Thursday, July 9, 2026 UTC

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• HAZARDS6/1053 2026-06-27 14:00Z – 2026-07-11 04:00Z SFC–15,000 ft

  21NM NW BLANDING, UT, Saturday, June 27, 2026 through Saturday, July 11, 2026 UTC

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• HAZARDS6/1072 2026-06-27 14:12Z – 2026-07-10 04:00Z SFC–11,000 ft

  27NM SW PROVO, UT, Saturday, June 27, 2026 through Friday, July 10, 2026 UTC

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• HAZARDS6/1074 2026-06-27 14:41Z – 2026-07-10 04:00Z SFC–11,000 ft

  7NM S SCIPIO, UT, Saturday, June 27, 2026 through Friday, July 10, 2026 UTC

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• HAZARDS6/1130 2026-06-28 06:00Z – 2026-07-12 04:00Z SFC–12,500 ft

  22NM N CORTEZ, CO, Sunday, June 28, 2026 through Sunday, July 12, 2026 UTC

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• HAZARDS6/1178 2026-06-28 13:31Z – 2026-07-13 04:00Z SFC–17,000 ft

  2NM N OURAY, CO, Sunday, June 28, 2026 through Monday, July 13, 2026 UTC

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• HAZARDS6/1169 2026-06-28 14:00Z – 2026-07-12 03:00Z SFC–12,500 ft

  32NM NW TAOS, NM, Sunday, June 28, 2026 through Sunday, July 12, 2026 UTC

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• HAZARDS6/1156 2026-06-28 14:00Z – 2026-07-12 03:00Z SFC–12,500 ft

  32NM NW TAOS, NM, Sunday, June 28, 2026 through Sunday, July 12, 2026 UTC

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• HAZARDS6/1144 2026-06-28 14:00Z – 2026-07-11 04:00Z SFC–11,000 ft

  27NM SW PROVO, UT, Sunday, June 28, 2026 through Saturday, July 11, 2026 UTC

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• HAZARDS6/1220 2026-06-28 16:15Z – 2026-07-11 04:00Z SFC–15,500 ft

  3NM E BEAVER, UT, Sunday, June 28, 2026 through Saturday, July 11, 2026 UTC

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• HAZARDS6/1244 2026-06-28 21:00Z – 2026-07-12 04:00Z SFC–10,500 ft

  13NM SW FLAGSTAFF, AZ, Sunday, June 28, 2026 through Sunday, July 12, 2026 UTC

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• HAZARDS6/1335 2026-06-29 01:32Z – 2026-07-13 04:00Z SFC–12,000 ft

  6NM S SCIPIO, UT, Monday, June 29, 2026 through Monday, July 13, 2026 UTC

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• HAZARDS6/1322 2026-06-29 03:00Z – 2026-07-13 16:00Z SFC–10,500 ft

  13NM SW FLAGSTAFF, AZ, Monday, June 29, 2026 through Monday, July 13, 2026 UTC

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• HAZARDS6/1333 2026-06-29 03:06Z – 2026-07-13 04:00Z SFC–17,000 ft

  8NM SW LEADVILLE, CO, Monday, June 29, 2026 through Monday, July 13, 2026 UTC

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• HAZARDS6/1334 2026-06-29 12:00Z – 2026-07-13 04:00Z SFC–12,000 ft

  25NM W GRAND JUNCTION, CO, Monday, June 29, 2026 through Monday, July 13, 2026 UTC

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• HAZARDS6/1324 2026-06-29 12:00Z – 2026-07-13 05:00Z SFC–13,000 ft

  18NM N CORTEZ, CO, Monday, June 29, 2026 through Monday, July 13, 2026 UTC

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• HAZARDS6/1310 2026-06-29 12:00Z – 2026-07-13 04:00Z SFC–17,000 ft

  2NM N OURAY, CO, Monday, June 29, 2026 through Monday, July 13, 2026 UTC

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• HAZARDS6/1416 2026-06-29 14:37Z – 2026-07-14 04:00Z SFC–13,500 ft

  15NM NW CAÑON CITY, CO, Monday, June 29, 2026 through Tuesday, July 14, 2026 UTC

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• HAZARDS6/1323 2026-06-29 16:00Z – 2026-07-13 03:00Z SFC–10,500 ft

  13NM SW FLAGSTAFF, AZ, Monday, June 29, 2026 through Monday, July 13, 2026 UTC

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• HAZARDS6/1584 2026-06-29 18:38Z – 2026-07-13 04:00Z SFC–12,500 ft

  32NM NW TAOS, NM, Monday, June 29, 2026 through Monday, July 13, 2026 UTC

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• HAZARDS6/1594 2026-06-29 18:49Z – 2026-07-13 03:00Z SFC–12,500 ft

  32NM NW TAOS, NM, Monday, June 29, 2026 through Monday, July 13, 2026 UTC

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• HAZARDS6/1728 2026-06-30 03:00Z – 2026-07-13 16:00Z SFC–8,500 ft

  13NM SW FLAGSTAFF, AZ, Tuesday, June 30, 2026 through Monday, July 13, 2026 UTC

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• HAZARDS6/1775 2026-06-30 06:00Z – 2026-07-14 04:00Z SFC–15,000 ft

  4NM SW PUEBLO, CO, Tuesday, June 30, 2026 through Tuesday, July 14, 2026 UTC

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• HAZARDS6/1778 2026-06-30 14:00Z – 2026-07-13 04:00Z SFC–16,000 ft

  16NM W MONTICELLO, UT, Tuesday, June 30, 2026 through Monday, July 13, 2026 UTC

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• HAZARDS6/2312 2026-07-01 04:00Z – 2026-07-15 04:00Z SFC–14,000 ft

  20NM W WALSENBURG, CO, Wednesday, July 1, 2026 through Wednesday, July 15, 2026 UTC

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• SECURITY6/7652 2026-07-01 16:07Z – 2026-07-21 04:59Z SFC–400 ft

  Riverside, MO

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• SECURITY6/7650 2026-07-01 16:07Z – 2026-07-21 04:59Z SFC–400 ft

  Kansas City, MO

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• HAZARDS6/2597 2026-07-02 04:41Z – 2026-07-16 04:00Z SFC–15,000 ft

  4NM SW PUEBLO, CO, Thursday, July 2, 2026 through Thursday, July 16, 2026 UTC

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• HAZARDS6/2598 2026-07-02 04:42Z – 2026-07-16 04:00Z SFC–12,000 ft

  25NM W GRAND JUNCTION, CO, Thursday, July 2, 2026 through Thursday, July 16, 2026 UTC

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• HAZARDS6/2594 2026-07-02 13:00Z – 2026-07-15 04:00Z SFC–12,000 ft

  23NM S PANACA, NV, Thursday, July 2, 2026 through Wednesday, July 15, 2026 UTC

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• HAZARDS6/2595 2026-07-02 14:00Z – 2026-07-13 05:00Z SFC–12,000 ft

  12NM N PIOCHE, NV, Thursday, July 2, 2026 through Monday, July 13, 2026 UTC

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• HAZARDS6/2593 2026-07-02 14:00Z – 2026-07-13 05:00Z SFC–12,000 ft

  12NM N PIOCHE, NV, Thursday, July 2, 2026 through Monday, July 13, 2026 UTC

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• HAZARDS6/2667 2026-07-02 15:00Z – 2026-07-16 05:00Z SFC–13,000 ft

  18NM N CORTEZ, CO, Thursday, July 2, 2026 through Thursday, July 16, 2026 UTC

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• HAZARDS6/2561 2026-07-02 16:00Z – 2026-07-15 03:00Z SFC–12,000 ft

  13NM SW FLAGSTAFF, AZ, Thursday, July 2, 2026 through Wednesday, July 15, 2026 UTC

  View FAA NOTAM →
• HAZARDS6/2812 2026-07-03 02:53Z – 2026-07-17 04:00Z SFC–17,000 ft

  1NM N OURAY, CO, Friday, July 3, 2026 through Friday, July 17, 2026 UTC

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• HAZARDS6/2600 2026-07-03 12:00Z – 2026-07-16 05:00Z SFC–13,000 ft

  18NM N CORTEZ, CO, Friday, July 3, 2026 through Thursday, July 16, 2026 UTC

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• SECURITY6/7864 2026-07-03 15:07Z – 2026-07-21 05:59Z SFC–400 ft

  Sandy, UT

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• SECURITY6/7862 2026-07-03 16:07Z – 2026-07-21 05:59Z SFC–400 ft

  Salt Lake City, UT

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• SECURITY6/7646 2026-07-03 16:07Z – 2026-07-21 04:59Z SFC–400 ft

  Lawrence, KS

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• SECURITY6/7647 2026-07-03 16:07Z – 2026-07-21 04:59Z SFC–400 ft

  Lawrence, KS

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• HAZARDS6/2845 2026-07-04 00:10Z – 2026-07-17 04:00Z SFC–12,500 ft

  6NM S SCIPIO, UT, Saturday, July 4, 2026 through Friday, July 17, 2026 UTC

  View FAA NOTAM →
• HAZARDS6/2942 2026-07-05 12:00Z – 2026-07-19 04:00Z SFC–17,000 ft

  2NM W LEADVILLE, CO, Sunday, July 5, 2026 through Sunday, July 19, 2026 UTC

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• HAZARDS6/3007 2026-07-06 12:00Z – 2026-07-20 04:00Z SFC–17,000 ft

  1NM W LEADVILLE, CO, Monday, July 6, 2026 through Monday, July 20, 2026 UTC

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• HAZARDS6/3006 2026-07-06 12:00Z – 2026-07-20 04:00Z SFC–12,000 ft

  15NM W GRAND JUNCTION, CO, Monday, July 6, 2026 through Monday, July 20, 2026 UTC

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• HAZARDS6/3021 2026-07-06 14:00Z – 2026-07-19 04:00Z SFC–16,000 ft

  16NM W MONTICELLO, UT, Monday, July 6, 2026 through Sunday, July 19, 2026 UTC

  View FAA NOTAM →
• SECURITY6/3018 2026-07-06 14:00Z – 2026-07-10 23:00Z SFC–400 ft

  Provo, UT, Monday, July 6, 2026 through Friday, July 10, 2026 Local

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• HAZARDS6/3016 2026-07-06 14:00Z – 2026-07-20 04:00Z SFC–11,000 ft

  7NM SW FLAGSTAFF, AZ, Monday, July 6, 2026 through Monday, July 20, 2026 UTC

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• HAZARDS6/3244 2026-07-06 23:59Z – 2026-07-09 04:00Z SFC–10,000 ft

  17NM NE WINNEMUCCA, NV, Monday, July 6, 2026 through Thursday, July 9, 2026 UTC

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• HAZARDS6/3274 2026-07-07 00:35Z – 2026-07-20 04:00Z SFC–17,000 ft

  1NM W LEADVILLE, CO, Tuesday, July 7, 2026 through Monday, July 20, 2026 UTC

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• HAZARDS6/3372 2026-07-07 02:34Z – 2026-07-20 04:00Z SFC–16,000 ft

  16NM W MONTICELLO, UT, Tuesday, July 7, 2026 through Monday, July 20, 2026 UTC

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• HAZARDS6/3393 2026-07-07 14:00Z – 2026-07-21 04:00Z SFC–11,000 ft

  7NM SW FLAGSTAFF, AZ, Tuesday, July 7, 2026 through Tuesday, July 21, 2026 UTC

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• HAZARDS6/3388 2026-07-07 14:00Z – 2026-07-21 04:00Z SFC–10,000 ft

  17NM NE WINNEMUCCA, NV, Tuesday, July 7, 2026 through Tuesday, July 21, 2026 UTC

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• HAZARDS6/3341 2026-07-07 14:00Z – 2026-07-21 04:00Z SFC–8,500 ft

  9NM S FLAGSTAFF, AZ, Tuesday, July 7, 2026 through Tuesday, July 21, 2026 UTC

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• HAZARDS6/3339 2026-07-07 14:00Z – 2026-07-21 04:00Z SFC–11,000 ft

  7NM SW FLAGSTAFF, AZ, Tuesday, July 7, 2026 through Tuesday, July 21, 2026 UTC

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• HAZARDS6/3801 2026-07-08 01:49Z – 2026-07-23 04:00Z SFC–15,000 ft

  1NM W PUEBLO, CO, Wednesday, July 8, 2026 through Thursday, July 23, 2026 UTC

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• HAZARDS6/3812 2026-07-08 02:09Z – 2026-07-21 04:00Z SFC–12,000 ft

  6NM S SCIPIO, UT, Wednesday, July 8, 2026 through Tuesday, July 21, 2026 UTC

  View FAA NOTAM →
• HAZARDS6/4199 2026-07-09 02:00Z – 2026-07-23 05:00Z SFC–13,000 ft

  18NM N CORTEZ, CO, Thursday, July 9, 2026 through Thursday, July 23, 2026 UTC

  View FAA NOTAM →
• SECURITY6/3215 2026-07-09 05:01Z – 2026-07-12 04:59Z SFC–1,000 ft

  Kansas City, MO, Thursday, July 9, 2026 through Saturday, July 11, 2026 Local

  View FAA NOTAM →

SkyMeter cross-referenced this flight against FAA-published TFRs that were active during its window and within its geographic bounding box. Overlap doesn't necessarily mean violation — the aircraft may have been outside the TFR’s precise polygon or flying under air-traffic-control coordination.

Automated analysis. Events shown on this page (such as go-around, unstable approach, or runway events) are heuristic classifications produced by algorithms from publicly broadcast ADS-B data. They are intended to surface flights of interest for further review — they are not findings of fact, and they do not determine pilot fault, regulatory compliance, or the cause of any occurrence. Coverage gaps and sensor noise can affect accuracy. Only the relevant civil aviation authority or accident investigation body can make official determinations. How we detect events · Dispute or correct this data