37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
Attributes | |
ACN | 1038721 |
Time | |
Date | 201209 |
Local Time Of Day | 0001-0600 |
Place | |
Locale Reference | LAS.Airport |
State Reference | NV |
Aircraft 1 | |
Make Model Name | Regional Jet CL65 Undifferentiated or Other Model |
Operating Under FAR Part | Part 121 |
Flight Phase | Cruise |
Route In Use | Vectors |
Flight Plan | IFR |
Person 1 | |
Function | Departure Trainee Approach |
Qualification | Air Traffic Control Developmental |
Person 2 | |
Function | Approach Departure |
Qualification | Air Traffic Control Fully Certified |
Events | |
Anomaly | ATC Issue All Types Deviation - Procedural Published Material / Policy |
Narrative:
While conducting OJT as a developmental; the sectors were combined; so all the departure sectors were on one sector. Traffic was busy; but manageable; and the tower called with a go around; and asked for non-standard routing on the go around aircraft and the aircraft immediately in front of that aircraft to establish some sort of separation between them. Aircraft are routinely cleared to land and take off parallel runways separated by less then 2;500 ft at las; and no effective procedure is in place to safely handle go-arounds off one runway with departures off the other if they are in close proximity. If they are not in close proximity; the go around is issued runway heading of 250 degrees until 3 DME then heading 200 degrees. Go around aircraft are then resequenced into the downwind and sequenced/positioned for another approach. In the case of a departure off the parallel runway; the tower calls and requests something different; possibly for both aircraft; as the usual procedures puts the aircraft close together. In this case the tower requested a left turn for the go around off the left runway; and runway heading for the departure off the right runway. This request was approved; as the tower indicated it was the only option they had; and the ojti and myself felt we could not disapprove the request; as they would be delivered to us in this manner. This; in and of itself; would not have been a problem had the sector had no other traffic to contend with; but there were other airplanes in the sector; and failure to keep up with all aircraft led to the aircraft in question to stray into higher MVA. Due to the proximity of high terrain off the departure end of runway 25 at las; any aircraft assigned runway heading is inherently dangerous; as any distraction to the controller could result in aircraft running into rising terrain. Due to this fact; all procedures off runway 25 turn aircraft parallel or away from high terrain; except one which heads them slightly into terrain. The missed approach go around procedure in place also heads aircraft slightly into terrain. Runway heading assignment off of runway 25 should never be utilized for the preceding terrain obstruction avoidance reason. A procedure needs to be developed which will eliminate this runway heading assignment. An option may be to turn one of the aircraft either via radar vector or SID departure route to the south; and then using visual separation turn the second or following aircraft to the south. In effect; the preceding aircraft is given the turn to the south; and the trailing aircraft either go around or departure is told to maintain visual and follow that aircraft to the south. This allows for aircraft to not be vectored into higher terrain; and gives the radar departure controller both time; and airspace to salvage a situation that currently is systemic and inherently dangerous.
Original NASA ASRS Text
Title: L30 Controller described a below MVA entry event involving missed approach aircraft from Runway 25L; the reporter voicing concern regarding current procedures covering missed approaches at LAS.
Narrative: While conducting OJT as a developmental; the sectors were combined; so all the departure sectors were on one sector. Traffic was busy; but manageable; and the Tower called with a go around; and asked for non-standard routing on the go around aircraft and the aircraft immediately in front of that aircraft to establish some sort of separation between them. Aircraft are routinely cleared to land and take off parallel runways separated by less then 2;500 FT at LAS; and no effective procedure is in place to safely handle go-arounds off one runway with departures off the other if they are in close proximity. If they are not in close proximity; the go around is issued runway heading of 250 degrees until 3 DME then heading 200 degrees. Go around aircraft are then resequenced into the downwind and sequenced/positioned for another approach. In the case of a departure off the parallel runway; the Tower calls and requests something different; possibly for both aircraft; as the usual procedures puts the aircraft close together. In this case the Tower requested a left turn for the go around off the left runway; and runway heading for the departure off the right runway. This request was approved; as the Tower indicated it was the only option they had; and the OJTI and myself felt we could not disapprove the request; as they would be delivered to us in this manner. This; in and of itself; would not have been a problem had the sector had no other traffic to contend with; but there were other airplanes in the sector; and failure to keep up with all aircraft led to the aircraft in question to stray into higher MVA. Due to the proximity of high terrain off the departure end of Runway 25 at LAS; any aircraft assigned runway heading is inherently dangerous; as any distraction to the controller could result in aircraft running into rising terrain. Due to this fact; all procedures off Runway 25 turn aircraft parallel or away from high terrain; except one which heads them slightly into terrain. The missed approach go around procedure in place also heads aircraft slightly into terrain. Runway heading assignment off of Runway 25 should never be utilized for the preceding terrain obstruction avoidance reason. A procedure needs to be developed which will eliminate this runway heading assignment. An option may be to turn one of the aircraft either via RADAR vector or SID Departure route to the south; and then using visual separation turn the second or following aircraft to the south. In effect; the preceding aircraft is given the turn to the south; and the trailing aircraft either go around or departure is told to maintain visual and follow that aircraft to the south. This allows for aircraft to not be vectored into higher terrain; and gives the RADAR Departure Controller both time; and airspace to salvage a situation that currently is systemic and inherently dangerous.
Data retrieved from NASA's ASRS site as of July 2013 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.