MD80 dispatcher and two maintenance technicians reported an inappropriately applied MEL concerning w...

Attributes
ACN	1436739
Time
Date	201703
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	IMC
Aircraft 1
Make Model Name	MD-80 Series (DC-9-80) Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	Parked
Flight Plan	IFR
Component
Aircraft Component	Window Ice/Rain System
Person 1
Function	Dispatcher
Qualification	Dispatch Dispatcher
Person 2
Function	Other / Unknown
Qualification	Maintenance Powerplant Maintenance Airframe
Events
Anomaly	Aircraft Equipment Problem Less Severe Deviation - Procedural FAR Deviation - Procedural MEL Deviation - Procedural Published Material / Policy

Narrative:

MD80 tech called 5 min prior to departure to ask if we were able to apply MEL 30 [for] flight deck windshield anti-ice system which has a no icing restriction. After reviewing the weather I determined that icing was not a factor. I requested the captain to call me to discuss the weather and MEL. Tech was conferenced in to finalize approval. At the end of the conversation tech requested to add [a different MEL 30]. As I scrolled down the MEL page I saw that there was not a dispatch restriction but missed the fact that the windshield anti-ice system had to be operative in order to apply this second MEL.

Original NASA ASRS Text

Title: MD80 Dispatcher and two Maintenance technicians reported an inappropriately applied MEL concerning window heat and anti-fog. The aircraft flew three legs before the error was discovered.

Narrative: MD80 tech called 5 min prior to departure to ask if we were able to apply MEL 30 [for] Flight Deck Windshield Anti-Ice System which has a no icing restriction. After reviewing the weather I determined that icing was not a factor. I requested the captain to call me to discuss the weather and MEL. Tech was conferenced in to finalize approval. At the end of the conversation tech requested to add [a different MEL 30]. As I scrolled down the MEL page I saw that there was not a dispatch restriction but missed the fact that the windshield anti-ice system had to be operative in order to apply this second MEL.

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.

MD80 dispatcher and two maintenance technicians reported an inappropriately applied MEL concerning window heat and anti-fog. The aircraft flew three legs before the error was discovered.