Commercial Fixed Wing
Flight Crew Multiengine; Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument
Distraction; Human-Machine Interface; Confusion
Aircraft Equipment Problem Less Severe; Deviation - Altitude Crossing Restriction Not Met
Air Traffic Control Issued New Clearance; Flight Crew Overcame Equipment Problem; Flight Crew Requested ATC Assistance / Clarification
Aircraft; Chart Or Publication; Procedure; Software and Automation
Near the end of the cruise phase of flight we briefed the arrival and the approach to the landing runway. During the brief of the arrival we had noticed that the crossing restriction at the first fix (DARAN) on the arrival (DARAN1A) was incorrect as compared between the approach plate and the arrival selected out of the FMC. The DARAN1A arrival is FL210 to FL230 at the DARAN; the altitude from the FMC showed FL250 to FL280 (DARAN1B). At this point we both cross checked the date on the approach and discussed when we had both done our last update. We concluded that we had both updated just before the flight and the dates were correct on the approach chart. We then had thought that maybe we had incorrectly loaded the wrong arrival into the FMC. We proceeded to monitor each other as we reloaded the landing runway approach and the correct arrival. After reloading the FMC with the landing runway approach and the DARAN1A for arrival we noticed that the crossing restriction at DARAN remain the same FL250 to FL280. Due to congestion in Mexico City our flight and another flight were told to hold 20 miles north of DARAN. When told to continue our plan was to question the crossing restriction at DARAN; but we were descended in the hold to FL210. After arriving at FL210 we were cleared to DARAN and the rest of the arrival landing on Runway 5R [was] uneventful. I have previously been into Mexico City and number of times and the DARAN1A crossing restriction at DARAN has been correct as depicted compared to the FMC. NOTE: All other fixes and crossing restrictions on the DARAN1A were correct except DARAN at FL250 to FL280. The FMC loaded DARAN1A is incorrect. Please check the FMC database is correct to make sure the DARAN crossing restriction between FL210 toFL230 is correct.
An Air Carrier pilot reported an incorrect crossing restriction for a STAR in the FMC Database.