Narrative:

On takeoff out of newark; we received a yellow IAS and altitude annunciations on my pfd. I told my copilot about the situation and he immediately remembered that he neglected to remove the pitot/static plate from the left side of the aircraft. We advised ATC that we needed to return to newark due to an instrumentation issue. We were cleared for the stadium visual 29 and landed without incident. Newark tower elected to dispatch the fire trucks; however their services were not needed.human factors for this include:one pilot goes to the terminal to pick up passengers while the other pre-flights the aircraft. This divides the crew; which I feel is unique to any operation.my co-pilot had issues starting the aircraft preflight because the inlet for the water system had frozen up despite being emptied at our home hangar prior to departure. A line personnel member disturbed my co-pilot during his routine and he never completed the preflight.my co-pilot mentioned that he had a bad nights sleep the night before. We departed the hotel at XA00 which may be a compounding factor.the weather was extremely cold at 4 degrees fahrenheit which lead to a minimal amount of loiter time outside of the aircraft.as with most incidents; it is not one item that causes a problem; but a chain of events. I walked past the cover in question as I entered the aircraft and did not notice it. There is not a flag on the plate and it is the same red color as the paint.this situation will be submitted to our company safety system and root causal analysis will be conducted.

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Original NASA ASRS Text

Title: A G280 First Officer; preparing for a pre-dawn departure from a frigid EWR airport; encountered numerous interruptions and freezing temperature related system difficulties while conducting his pre-flight. The Captain was otherwise engaged with passenger greeting and boarding and was; thus; unavailable for consultation or assistance. After takeoff the Captain's ASI and altimeter were inoperative; which reminded the First Officer that the last interruption of his pre-flight prevented him from completing the left side exterior inspection and he had forgotten to return to complete the task. The static port cover; as a result; was still in place preventing associated instrumentation from operating. They returned safely to the VFR airport.

Narrative: On takeoff out of Newark; we received a yellow IAS and ALT annunciations on my PFD. I told my copilot about the situation and he immediately remembered that he neglected to remove the pitot/static plate from the left side of the aircraft. We advised ATC that we needed to return to Newark due to an instrumentation issue. We were cleared for the stadium visual 29 and landed without incident. Newark tower elected to dispatch the fire trucks; however their services were not needed.Human factors for this include:One pilot goes to the terminal to pick up passengers while the other pre-flights the aircraft. This divides the crew; which I feel is unique to any operation.My co-pilot had issues starting the aircraft preflight because the inlet for the water system had frozen up despite being emptied at our home hangar prior to departure. A line personnel member disturbed my co-pilot during his routine and he never completed the preflight.My co-pilot mentioned that he had a bad nights sleep the night before. We departed the hotel at XA00 which may be a compounding factor.The weather was extremely cold at 4 degrees Fahrenheit which lead to a minimal amount of loiter time outside of the aircraft.As with most incidents; it is not one item that causes a problem; but a chain of events. I walked past the cover in question as I entered the aircraft and did not notice it. There is not a flag on the plate and it is the same red color as the paint.This situation will be submitted to our company safety system and root causal analysis will be conducted.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.