B757 Undifferentiated or Other Model
Flight Crew Air Transport Pilot (ATP)
Training / Qualification; Human-Machine Interface
Deviation - Altitude Crossing Restriction Not Met; Deviation - Altitude Undershoot; Deviation / Discrepancy - Procedural Clearance; Deviation / Discrepancy - Procedural Published Material / Policy
Air Traffic Control Provided Assistance; Flight Crew Requested ATC Assistance / Clarification; Flight Crew FLC Overrode Automation; Flight Crew Became Reoriented
Human Factors
We were reassigned to the ANCHR 4 RNAV arrival and confirmed that all fixes; altitudes; and speed restrictions were correctly depicted on the CDU. We also loaded the ILS to 35L and selected the BOSSS transition for situational awareness purposes. At approximately 14000 feet; the FAA inspector who was observing from the jumpseat; alerted us that we were not going to make the DOGGG restrictions and we noticed that its altitude and speed restriction were deleted in the CDU; after we confirmed that they were there when we initially loaded the ANCHR 4. The First Officer (FO) informed ATC that we would not make the restrictions and we were re-cleared to 9000 feet with speed at our discretion. I told the FAA inspector that we had the same issue on a previous flight and did not know why it was involuntarily deleted after confirming that it was properly loaded. During the debrief; the FAA inspector realized what caused this and we believe that this should be brought to the attention to all pilots. He told us that by selecting the BOSSS transition; where BOSSS is to be crossed at a higher altitude; took precedence over DOGGG. DOGGG on the RNAV arrival is to be crossed at 210kts and at 11000 feet. On the ILS 35L approach plate; BOSSS is to be crossed at 210kts but at 12000 feet. We had a similar scenario on [a following] flight. Although we selected the PURRL transition for ILS 35R. However; PURRL is to be crossed at 9000 feet; which is lower than DOGGG but nonetheless DOGGG's restrictions were deleted. While the approach transitions are very useful for situational awareness; they caused us to have a possible altitude and speed deviation and we recommend that this be disseminated for safety reasons.
A 757 Captain reported that a crossing restriction on the arrival was not meet and the deviation was pointed out to the crew by the FAA Inspector on the observer's seat.