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Air carrier first officer reported that when flying the ILS runway 1R circle to land runway 30 at iad following the glideslope sets one up for an unstabilized approach and questions why there is not an RNAV or FMS visual to runway 30.
| Attributes | |
| ACN | 1396613 |
| Time | |
| Date | 201610 |
| Local Time Of Day | 0001-0600 |
| Place | |
| Locale Reference | IAD.Airport |
| State Reference | DC |
| Environment | |
| Light | Night |
| Aircraft 1 | |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Final Approach |
| Flight Plan | IFR |
| Person 1 | |
| Function | First Officer Pilot Not Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 60 Flight Crew Total 13000 Flight Crew Type 1039 |
| Events | |
| Anomaly | Deviation - Procedural Published Material / Policy Inflight Event / Encounter Unstabilized Approach |
Narrative:
Following the glideslope on 1R is fraught with danger and results in a less than perfect stabilized approach. The flightpath distance from 1R threshold to 30 is about a mile so the minimum that one would be low on a 3-degree descent path to 30 is 320. A level off at 300-400 feet is common but so is a shallow descent; each of which have one banking fairly low to the ground. Both of these will get you 4 red lights on the 30 PAPI.this is not a great technique but I would bet it is the most common.
Original NASA ASRS Text
Title: Air Carrier First Officer reported that when flying the ILS RWY 1R circle to land runway 30 at IAD following the glideslope sets one up for an unstabilized approach and questions why there is not an RNAV or FMS visual to runway 30.
Narrative: Following the glideslope on 1R is fraught with danger and results in a less than perfect stabilized approach. The flightpath distance from 1R threshold to 30 is about a mile so the minimum that one would be low on a 3-degree descent path to 30 is 320. A level off at 300-400 feet is common but so is a shallow descent; each of which have one banking fairly low to the ground. Both of these will get you 4 red lights on the 30 PAPI.This is not a great technique but I would bet it is the most common.
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.