Date: 201412
Local time of day: 1201-1800
Location: ASE.Airport, CO
Flight conditions: VMC
Weather elements / visibility: 10
Light: Daylight
Aircraft: BAe 125 Series 800
Operator: Air Taxi
Operating under: Part 135
Flight plan: IFR
Mission: Passenger
Flight phase: Final Approach
Airspace: Class D ASE
ATC / advisory: Tower ASE
Reporter organization: Air Taxi
Reporter function: Pilot Not Flying; Check Pilot; First Officer
Reporter qualification: Flight Crew Multiengine; Flight Crew Instrument; Flight Crew Flight Instructor; Flight Crew Air Transport Pilot (ATP)
Human factors: Situational Awareness; Training / Qualification
Anomaly: Deviation / Discrepancy - Procedural Published Material / Policy; Inflight Event / Encounter Weather / Turbulence; Inflight Event / Encounter CFTT / CFIT
Detector: Automation Aircraft Terrain Warning; Person Air Traffic Control
When detected: In-flight
Result: Air Traffic Control Issued Advisory / Alert; Flight Crew Executed Go Around / Missed Approach
Contributing factors: Airport; Weather; Procedure; Human Factors
Primary problem: Human Factors

Narrative: The leg was a passenger leg to ASE and the weather initially was overcast 3;500 feet. We initiated the approach; descended to our minimums which are 3;100 feet; but most likely due to the slow rate of descent; we reached the missed approach point without breaking out. I called for the missed approach; which we executed; and we went out to hold. I queried ATC to see if the next aircraft made it in; and if so; what he reported the bases to be; and they said bases were still 3;500 feet. At this point we asked for a second approach; fully configured by DBL; and initiated the approach. The weather had almost completely blown through at this point and we had a visual of the field probably about 9 miles out. The pilot flying asked if he could descend to which I informed him 'a little bit' as we were still a couple of hundred feet above the published minimums for the approach. However; the flying pilot began a rapid descent and I told him to check his descent. He replied by saying he had the runway in sight and didn't want to pop back into the clouds; but I didn't see that there were any clouds above us; and I knew we needed to comply with the approach minimums even though we had a visual of the runway. The flying pilot continued to descend even after I told him to check his descent which resulted in a GPWS warning for terrain. At this same time; the tower called and asked us to immediately check our altitude as they were reporting that we were getting too close to the terrain. I informed the tower that we had a visual on the mountains and the runway; but I was very uncomfortable that the flying pilot decided to descend excessively for some reason. We landed without any further issues.  The flying pilot is a fairly new pilot with our company; although he has a good deal of experience in the airplane. One of the reasons I was flying with him that day was to observe how he did flying into a mountainous airport. As the non-flying pilot; I was there to assist him with the approach and make sure everything was set up and executed correctly and on time. I believe I made a mistake when I did not strongly verbalize the minimum altitudes while directing him to arrest the descent immediately. Also; when we received the GPWS warning; I asked him to climb; but he only decreased his descent rate a little which is contrary to our training. As a company; we are sending him to training with additional mountain training; and will be performing an IOE with him again in an effort to ensure his judgment; flying skills; and attitude fall in line with our company's policies and 'best practices.'




Synopsis: Hawker 800 Check Pilot describes an approach into ASE that results in a missed approach due to not breaking out. On the second approach the Captain under instruction acquires the airport visually at 9 miles and continues descent below applicable stepdown altitudes despite the reporter's instructions to comply with the altitudes. This results in a GPWS warning and a low altitude alert from ATC. A normal landing ensues.