A B737-800 captain and his flight's dispatcher have different opinions about applying an ice accreti...

Attributes
ACN	1325027
Time
Date	201601
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Light	Daylight
Aircraft 1
Make Model Name	B737-800
Operating Under FAR Part	Part 121
Flight Phase	Parked
Flight Plan	IFR
Component
Aircraft Component	Company Operations Manual
Person 1
Function	Captain
Qualification	Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 147 Flight Crew Type 2507
Person 2
Function	Dispatcher
Qualification	Dispatch Dispatcher
Events
Anomaly	Deviation - Procedural FAR Deviation - Procedural Published Material / Policy Inflight Event / Encounter Weather / Turbulence

Narrative:

Snow and overcast conditions prevailed at departure. As I reviewed the paperwork I checked the temperature in den which was less than 10 C for arrival. The performance documents did not mention ice accretion penalty applied. I called the dispatcher to ask why and his response surprised me. His training manual claims ice accretion penalty is applied from TOD on down to landing. We conferenced the chief pilot who concurred with my assessment. The correct manner to define the ice accretion penalty is 'when icing is encountered during any phase of flight and the landing temp is below 10C.' I'm concerned our company is dispatching flights outside of far 121 compliance.

Original NASA ASRS Text

Title: A B737-800 Captain and his flight's Dispatcher have different opinions about applying an ice accretion weight penalty to the landing weight when ice was only encountered during climb and the Flight Operations Manual (FOM) does not provide clear guidance.

Narrative: Snow and overcast conditions prevailed at departure. As I reviewed the paperwork I checked the temperature in DEN which was less than 10 C for arrival. The performance documents did not mention ice accretion penalty applied. I called the Dispatcher to ask why and his response surprised me. His training manual claims ice accretion penalty is applied from TOD on down to landing. We conferenced the Chief Pilot who concurred with my assessment. The correct manner to define the ice accretion penalty is 'when icing is encountered during any phase of flight and the landing temp is below 10C.' I'm concerned our company is dispatching flights outside of FAR 121 compliance.

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.

A B737-800 captain and his flight's dispatcher have different opinions about applying an ice accretion weight penalty to the landing weight when ice was only encountered during climb and the flight operations manual (fom) does not provide clear guidance.