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Center controller described a probable loss of separation event during oceanic operations due to an emergency descent required for icing.
| Attributes | |
| ACN | 935437 |
| Time | |
| Date | 201103 |
| Local Time Of Day | 0001-0600 |
| Place | |
| Locale Reference | ZZZ.ARTCC |
| State Reference | US |
| Aircraft 1 | |
| Make Model Name | Hercules (C-130) |
| Operating Under FAR Part | Part 91 |
| Flight Phase | Descent |
| Route In Use | None |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Stratolifter (C-135)/Stratotanker (KC-135) |
| Operating Under FAR Part | Part 91 |
| Flight Phase | Cruise |
| Person 1 | |
| Function | Supervisor / CIC |
| Events | |
| Anomaly | Inflight Event / Encounter Weather / Turbulence |
Narrative:
A C130 that was non-RNP10 on ats rxxx at FL230 made an emergency descent for icing to F150. Another C130 was 12 minutes in trail at FL220 also on rxxx and the required separation was 15 minutes. Additional traffic was a K35R in flight with 2 A10s also non-RNP10 was on rxxx in the block FL160 thru FL210. The required lateral separation for the C130 and K35R flight was 100 NM. All aircraft were westbound. As the flm; I was notified of the emergency descent from the controller and immediately went to the sector. I verified the data and forwarded the information to the omic. Additionally; I asked the controller to confirm from the C130 the descent was an emergency due to icing.
Original NASA ASRS Text
Title: Center Controller described a probable loss of separation event during oceanic operations due to an emergency descent required for icing.
Narrative: A C130 that was Non-RNP10 on ATS RXXX at FL230 made an emergency descent for icing to F150. Another C130 was 12 minutes in trail at FL220 also on RXXX and the required separation was 15 minutes. Additional traffic was a K35R in flight with 2 A10s also Non-RNP10 was on RXXX in the block FL160 thru FL210. The required lateral separation for the C130 and K35R flight was 100 NM. All aircraft were westbound. As the FLM; I was notified of the emergency descent from the Controller and immediately went to the sector. I verified the data and forwarded the information to the OMIC. Additionally; I asked the Controller to confirm from the C130 the descent was an emergency due to icing.
Data retrieved from NASA's ASRS site as of April 2012 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.