 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
C90 controller reported a C25B experienced avionics failure; loss of aircraft control; and descent below MVA.
| Attributes | |
| ACN | 1549788 |
| Time | |
| Date | 201806 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | C90.TRACON |
| State Reference | IL |
| Aircraft 1 | |
| Make Model Name | Citationjet (C525/C526) - CJ I / II / III / IV |
| Flight Phase | Final Approach |
| Route In Use | Vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Flight Plan | VFR |
| Component | |
| Aircraft Component | PFD |
| Person 1 | |
| Function | Approach |
| Qualification | Air Traffic Control Fully Certified |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe Deviation - Altitude Excursion From Assigned Altitude Deviation - Procedural Published Material / Policy Deviation - Procedural Clearance Inflight Event / Encounter Loss Of Aircraft Control Inflight Event / Encounter CFTT / CFIT |
Narrative:
Aircraft X; C25B; was number 2 of a 3 plane sequence to dpa airport. The weather was IFR; and near minimums. Aircraft X was straight in for the ILS 2L. There were multiple aircraft from dpa/arrival awaiting release that were holding due to several arrivals for dpa at 3;000. Aircraft X appeared to have slowed on their own; so I reduced them further to make them number 2 in the sequence; since they no longer were ahead of the downwind traffic. When I turned aircraft X on final; their airspeed appeared above the assigned speed. Separation with preceding traffic was nearly lost. I turned aircraft X off the final to increase spacing; at which point aircraft X descended well below the MVA without a clearance. After several attempts to correct aircraft X's course; they appeared to have lost control of their aircraft. Eventually; the pilot said they had lost all the left side avionics and was flying the aircraft off the right side. During this scenario; arrival tower; allowed aircraft Y depart VFR; in marginal weather since they weren't getting an IFR release. This added workload; [of] having aircraft Y on frequency scud running and trying to get an IFR clearance was an added; unnecessary burden.[my recommendation is to] require satellite towers coordinate with tmu when an IFR release cannot be obtained; prior to allowing an aircraft depart VFR.
Original NASA ASRS Text
Title: C90 controller reported a C25B experienced avionics failure; loss of aircraft control; and descent below MVA.
Narrative: Aircraft X; C25B; was number 2 of a 3 plane sequence to DPA airport. The weather was IFR; and near minimums. Aircraft X was straight in for the ILS 2L. There were multiple aircraft from DPA/ARR awaiting release that were holding due to several arrivals for DPA at 3;000. Aircraft X appeared to have slowed on their own; so I reduced them further to make them Number 2 in the sequence; since they no longer were ahead of the downwind traffic. When I turned Aircraft X on final; their airspeed appeared above the assigned speed. Separation with preceding traffic was nearly lost. I turned Aircraft X off the final to increase spacing; at which point Aircraft X descended well below the MVA without a clearance. After several attempts to correct Aircraft X's course; they appeared to have lost control of their aircraft. Eventually; the pilot said they had lost all the left side avionics and was flying the aircraft off the right side. During this scenario; ARR tower; allowed Aircraft Y depart VFR; in marginal weather since they weren't getting an IFR release. This added workload; [of] having Aircraft Y on frequency scud running and trying to get an IFR clearance was an added; unnecessary burden.[My recommendation is to] require satellite towers coordinate with TMU when an IFR release cannot be obtained; prior to allowing an aircraft depart VFR.
Data retrieved from NASA's ASRS site 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.