- operating as Pilot Flying in Low Vis conditions (take-off/approach/landing)? We don't have clearance for Low Vis ops yet and are restricted to CAT I Ops only. So no restriction for the FO.
- calling for and executing a Rejected Take-off? BOTH can callout but reject decision is with the Capt. The only obvious exception being P1 Incapacitation
landing/take-off in adverse weather conditions, eg. x-wind/contaminated
runways/wind shear/etc? No Assisted Take-off & Landing in Adverse weather. In other words, Capt is PF.
challenging/demanding approaches like circling approaches/Cat C airfields? No restriction on circling approaches but Critical airfields [as per company policy] are Capt only.
taxiing the aircraft? Depends on the acft. Half have tillers and half dont. If the tiller is installed, no restriction.
signing the Tech log? Capt only, but is usually completed by FO.