Pilots can safely test aircraft systems or components (e.g., new engines, repaired fuel pumps) during flight if a "safety net" is in place, allowing for risk-free evaluation.
Due to Brexit and a lack of agreement between the UK and EU on EGNOS, LPV minimums have been removed from UK approach charts, despite the SBAS signal still being present.
A "Hold in Lieu of Procedure Turn" (HILPT) is considered a valid hold for maintaining instrument currency.
Altimeter agreement requirements are significantly stricter for Part 121 (commercial) operations, with specific limits for discrepancies between altimeters both on the ground and in flight, compared to Part 91 (general aviation) which primarily requires altimeters to be within 75 feet of field elevation.
I read with interest your “Go? Or No-Go?” Remarks in the September 2022 issue, where you analyzed that choice in light of a failed aux-tank fuel pump, without which you could complete your trip. If you can test the system, as you’re doing, without solely relying on it in such a way that you always have safer harbor, it’s a go.
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