Citation Excel (C560XL)
Flight Crew Air Transport Pilot (ATP)
Deviation / Discrepancy - Procedural Maintenance; Deviation / Discrepancy - Procedural Published Material / Policy
General Flight Cancelled / Delayed
Procedure
During preflight discovered black tape over static ports. I photographed the discrepancy and forwarded images to maintenance. Maintenance responded via email to write the aircraft up as an Aircraft On Ground (AOG). I complied.Black tape was on the right side static ports from maintenance. After reviewing the log book and reading that the last maintenance had been performed on the pitot static system; I rubbed my hand over the static ports on the left side searching for tape. I had read previous NTSB reports where after painting or pitot/static system service this was the cause of several incidents. I'm glad the tape was black and not clear; as this made it easier to see. This was the second time in less than 30 days maintenance had been performed on the system for a similar squawk. Please reference the corrective action discussing that dry rot had been discovered in the hoses while performing a leak check. Dry rot takes some time to happen; are the hoses for this system not VISUALLY inspected in addition to the required checks every 24 months? I have previously written up several aircraft for cracking hoses hooked to the ADC in the nose compartment. The nose compartment hoses are sometimes covered in anti-chaffing wrap; which inhibits a thorough inspection. Perhaps with the age of the aircraft; an increased inspection interval is required.
C560XL Captain reported tape was left over static ports after maintenance was performed. Captain was directed by maintenance to write the aircraft up as grounded.