What would the expected issues be? Does it conflict with a wave of arrivals
at that time in T1
The main reason is the higher than expected forward bookings, but, Im genuinely unsure what the issue is regarding the trial. T1 arrivals not exactly heaving around 19:15 (just 2x Lufthansa jungle jets, 1x Easyjet and 1x Jet2).
The departure period of 21:00-21:35 is only marginally busier with 6 departures.
Having handled an A380 for nearly 3 years, and on some days dispatching 2 A380 within 1 hour (LHR diverts and delays from previous days), its strange to think that MAN requires a 'trial', however, this is the story I was told and maybe complete balderdash?