A captain reported ten minutes prior to entering tehran airspace they attempted to contact on a set ...

Attributes
ACN	1177167
Time
Date	201406
Local Time Of Day	1201-1800
Place
Locale Reference	OIIX.ARTCC
State Reference	FO
Environment
Light	Daylight
Aircraft 1
Make Model Name	Widebody Low Wing 2 Turbojet Eng
Operating Under FAR Part	Part 121
Flight Phase	Cruise
Flight Plan	IFR
Component
Aircraft Component	Aero Charts
Person 1
Function	Pilot Not Flying Captain
Experience	Flight Crew Last 90 Days 270 Flight Crew Total 21000 Flight Crew Type 300
Events
Anomaly	Aircraft Equipment Problem Less Severe Deviation - Procedural Published Material / Policy

Narrative:

This flight operates through geopolitically challenging regions. For various reasons; usually from tensions between neighboring countries; it's often necessary to coordinate our own handoffs between air traffic control facilities. This means contacting each country approximately 10 minutes prior to entry for clearance into their airspace. The most recent version of eurasia/middle east EA2/ME1 has a printing error that blots out essential radio frequencies we consult for required contacts. In this case; approaching iran; we were unexpectedly unable to acquire the necessary communication frequency. We scrambled for another chart only to find incorrect information listing 127.8 and 135.1 as tehran stations. Those are air defense radar frequencies not tehran air traffic control frequencies. Flying through some of the world's most hostile regions; it's imperative that we have accurate information to avoid a territorial incident.

Original NASA ASRS Text

Title: A Captain reported ten minutes prior to entering Tehran Airspace they attempted to contact on a set of EA1/ME1 Chart frequencies in a black box with black text which turned out to be unmanned Air Defense Radar radios. Later; they found green text in a green box containing the correct frequencies.

Narrative: This flight operates through geopolitically challenging regions. For various reasons; usually from tensions between neighboring countries; it's often necessary to coordinate our own handoffs between air traffic control facilities. This means contacting each country approximately 10 minutes prior to entry for clearance into their airspace. The most recent version of Eurasia/Middle East EA2/ME1 has a printing error that blots out essential radio frequencies we consult for required contacts. In this case; approaching Iran; we were unexpectedly unable to acquire the necessary communication frequency. We scrambled for another chart only to find incorrect information listing 127.8 and 135.1 as Tehran stations. Those are Air Defense Radar frequencies NOT Tehran air traffic control frequencies. Flying through some of the world's most hostile regions; it's imperative that we have accurate information to avoid a territorial incident.

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 captain reported ten minutes prior to entering tehran airspace they attempted to contact on a set of EA1/ME1 chart frequencies in a black box with black text which turned out to be unmanned air defense radar radios. Later; they found green text in a green box containing the correct frequencies.