Upon glideslope capture during ILS approach to teb; challenger 605 crew experienced a sudden nose-up...

Attributes
ACN	1295998
Time
Date	201509
Local Time Of Day	1201-1800
Place
Locale Reference	TEB.Airport
State Reference	NJ
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Challenger 605
Operating Under FAR Part	Part 91
Flight Phase	Initial Approach
Flight Plan	IFR
Component
Aircraft Component	INS / IRS / IRU
Person 1
Function	Pilot Not Flying Captain
Events
Anomaly	Aircraft Equipment Problem Less Severe Inflight Event / Encounter Unstabilized Approach

Narrative:

On approach course to teb; 2.0 miles outside of tuggz at 2000 feet; GS came alive; pilot flying (PF) called for 'gear down; flaps 30; landing checklist'. After; as pilot monitoring (pm); I put the gear down the aircraft captured the GS; then pitched up to chase the GS which had moved back up to the top of the scale. Aircraft climbed 300 feet before PF arrested the climb and leveled off. GS came back down and the rest of the approach was uneventful. This is a known issue with the GS on this ILS.

Original NASA ASRS Text

Title: Upon glideslope capture during ILS approach to TEB; Challenger 605 crew experienced a sudden nose-up attitude excursion. Pilot flying over-rode the autopilot and completed the approach and landing.

Narrative: On approach course to TEB; 2.0 miles outside of TUGGZ at 2000 feet; GS came alive; Pilot Flying (PF) called for 'gear down; flaps 30; landing checklist'. After; as Pilot Monitoring (PM); I put the gear down the aircraft captured the GS; then pitched up to chase the GS which had moved back up to the top of the scale. Aircraft climbed 300 feet before PF arrested the climb and leveled off. GS came back down and the rest of the approach was uneventful. This is a known issue with the GS on this ILS.

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.

Upon glideslope capture during ILS approach to teb; challenger 605 crew experienced a sudden nose-up attitude excursion. Pilot flying over-rode the autopilot and completed the approach and landing.