B757-200
Flight Crew Air Transport Pilot (ATP)
Distraction
Aircraft Equipment Problem Less Severe; Deviation - Altitude Crossing Restriction Not Met; Deviation - Altitude Overshoot; Deviation / Discrepancy - Procedural Published Material / Policy
Flight Crew Returned To Clearance; Flight Crew Became Reoriented; Flight Crew Overcame Equipment Problem
Human Factors
I was the pilot not flying to EGE; we were just past RLG VOR. I was having difficulty adjusting the brightness on my iPad; which was distracting me. After crossing RLG at 14;000 feet; ATC informed us of a low altitude alert; I looked and we were at 13;500 feet; the MOA is 13;800 feet for that leg. The First Officer immediately corrected; and climbed the aircraft to 13;800 feet. He then reset the Vnav path for the approach and the approach was continued uneventfully with a normal approach and landing on RWY 25 at EGE. At no time did we get any alerts or warning from the GPWS.The First Officer was trying to assist me in dimming my iPad; which distracted both of us for a few seconds. The moon was low and this is an approach into a dark valley; so the brightness of the iPad was very distracting to me by putting a glare on my window and making it difficult to see outside.On the layover I found several quick different ways to dim my iPad to very low settings for future use. This has never been a problem for me until last night. I will not have this problem again.
Instead of monitoring LNAV and VNAV I was distracted by the Captain and was trying to help him with the brightness of his iPad. It is imperative that while on the approach that LNAV and VNAV be monitored at all times and that small distractions like iPads be ignored until after the approach or go around.
B757-200 flight crew reported they were distracted by an overly bright iPad while on an approach to EGE and descended below MOA.