B737 captain reported airspeed and altitude anomalies after takeoff due to undetected damage to pito...

Attributes
ACN	1518110
Time
Date	201802
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Light	Daylight
Aircraft 1
Make Model Name	Large Transport Low Wing 2 Turbojet Eng
Operating Under FAR Part	Part 121
Flight Phase	Climb
Flight Plan	IFR
Component
Aircraft Component	Pitot-Static System
Person 1
Function	Captain Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 210 Flight Crew Type 10000
Events
Anomaly	Aircraft Equipment Problem Less Severe Deviation - Procedural Weight And Balance Ground Event / Encounter Other / Unknown

Narrative:

Damage to alpha vane and pitot tube occurred at some point. Stick shaker activated on climbout and altimeter was 1000 ft off. [ATC was advised] and uneventful overweight landing was accomplished.

Original NASA ASRS Text

Title: B737 Captain reported airspeed and altitude anomalies after takeoff due to undetected damage to pitot static sensors.

Narrative: Damage to alpha vane and pitot tube occurred at some point. Stick shaker activated on climbout and altimeter was 1000 ft off. [ATC was advised] and uneventful overweight landing was accomplished.

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.

B737 captain reported airspeed and altitude anomalies after takeoff due to undetected damage to pitot static sensors.