B737 captain reported performance correction for MEL no longer exist in performance handbook.

Attributes
ACN	1687145
Time
Date	201909
Local Time Of Day	1201-1800
Place
Locale Reference	ZZZZ.Airport
State Reference	US
Aircraft 1
Make Model Name	B737-900
Operating Under FAR Part	Part 121
Flight Plan	IFR
Component
Aircraft Component	Speedbrake/Spoiler
Person 1
Function	Pilot Flying Captain
Qualification	Flight Crew Instrument Flight Crew Multiengine Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Aircraft Equipment Problem Less Severe Deviation - Procedural MEL Deviation - Procedural Published Material / Policy

Narrative:

Auto speed brake inoperative. MEL says to reference 'performance handbook' for corrections. Upon reference performance handbook; all corrections have been deleted and no longer exist. Unable now to comply with MEL. A section of the performance handbook referencing takeoff with auto speed brake has been removed with no directions on what to do. The company has failed to ensure that the required documents are made available for the safe operations of the aircraft. This is not the only place where information has been deleted from the performance handbook and the reference directing you to it still exists in the MEL.the company should immediately go through the MEL and look for all references of the performance handbook. They should then determine where the information that is being indicated and restore it to the performance handbook so that pilots can safely operate the aircraft.

Original NASA ASRS Text

Title: B737 Captain reported performance correction for MEL no longer exist in Performance Handbook.

Narrative: Auto Speed Brake Inoperative. MEL says to reference 'Performance Handbook' for corrections. Upon reference Performance Handbook; all corrections have been deleted and no longer exist. Unable now to comply with MEL. A section of the Performance Handbook referencing takeoff with auto speed brake has been removed with no directions on what to do. The Company has failed to ensure that the required documents are made available for the safe operations of the aircraft. This is not the only place where information has been deleted from the Performance Handbook and the reference directing you to it still exists in the MEL.The company should immediately go through the MEL and look for all references of the Performance Handbook. They should then determine where the information that is being indicated and restore it to the Performance Handbook so that pilots can safely operate the aircraft.

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.