A crj-200 flight crew failed to note the pitot cover for the standby airspeed indicator was still in...

Narrative:

As I walked onto the airplane to store my roll-a-board and flight case; I checked the cabinet to see if there were any pitot covers inside. There was one cover already inside. I completed the outside preflight and collected the additional two pitot covers and boarded the aircraft. After takeoff; the captain; check airman; and I heard a loud noise on the left side of the aircraft. Along with the loud noise; was a fluctuation of airspeed on the standby airspeed indicator. After leaving 8;000 ft; the noise stopped. After reaching 10;000 ft; I asked the check airman to verify for me that three pitot covers were on board; which there were. After landing the check airman looked outside to find that the standby pitot cover was; in fact; left on the pitot tube and missed during preflight. There were a total of four pitot covers on board!I had become complacent during preflight and assumed that the pitot cover that was left on the airplane had belonged to the standby airspeed pitot tube. This is because I often find that the standby pitot cover is left inside the aircraft during overnights due to some crews being unable to reach the pitot tube. Next time; I will be sure to conduct a more detailed and attentive preflight. I will not assume that the minimum amount of pitot covers are on board and will verify that all pitot tubes are uncovered.

Original NASA ASRS Text

Title: A CRJ-200 flight crew failed to note the pitot cover for the standby airspeed indicator was still in place during their preflight. The error was discovered in flight.

Narrative: As I walked onto the airplane to store my roll-a-board and flight case; I checked the cabinet to see if there were any pitot covers inside. There was one cover already inside. I completed the outside preflight and collected the additional two pitot covers and boarded the aircraft. After takeoff; the Captain; Check Airman; and I heard a loud noise on the left side of the aircraft. Along with the loud noise; was a fluctuation of airspeed on the standby airspeed indicator. After leaving 8;000 FT; the noise stopped. After reaching 10;000 FT; I asked the Check Airman to verify for me that three pitot covers were on board; which there were. After landing the Check Airman looked outside to find that the standby pitot cover was; in fact; left on the pitot tube and missed during preflight. There were a total of four pitot covers on board!I had become complacent during preflight and assumed that the pitot cover that was left on the airplane had belonged to the standby airspeed pitot tube. This is because I often find that the standby pitot cover is left inside the aircraft during overnights due to some crews being unable to reach the pitot tube. Next time; I will be sure to conduct a more detailed and attentive preflight. I will not assume that the minimum amount of pitot covers are on board and will verify that all pitot tubes are uncovered.

Data retrieved from NASA's ASRS site as of April 2012 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.

Attributes
ACN	926139
Time
Date	201101
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Dawn
Aircraft 1
Make Model Name	Regional Jet 200 ER/LR (CRJ200)
Operating Under FAR Part	Part 121
Flight Phase	Parked
Flight Plan	IFR
Component
Aircraft Component	Pitot-Static System
Person 1
Function	First Officer Pilot Flying
Person 2
Function	Pilot Not Flying Captain
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Aircraft Equipment Problem Critical Deviation - Procedural Published Material / Policy

A crj-200 flight crew failed to note the pitot cover for the standby airspeed indicator was still in place during their preflight. The error was discovered in flight.