diff --git a/flight/pios/common/pios_com.c b/flight/pios/common/pios_com.c
index 6bef10454..c1a05f359 100644
--- a/flight/pios/common/pios_com.c
+++ b/flight/pios/common/pios_com.c
@@ -296,6 +296,28 @@ int32_t PIOS_COM_ChangeBaud(uint32_t com_id, uint32_t baud)
     return 0;
 }
 
+
+/**
+ * Clear Rx buffer
+ * \param[in] port COM port
+ * \return -1 if port not available
+ * \return 0 on success
+ */
+int32_t PIOS_COM_ClearRxBuffer(uint32_t com_id)
+{
+    struct pios_com_dev *com_dev = (struct pios_com_dev *)com_id;
+
+    if (!PIOS_COM_validate(com_dev)) {
+        /* Undefined COM port for this board (see pios_board.c) */
+        return -1;
+    }
+
+    fifoBuf_clearData(&com_dev->rx);
+
+    return 0;
+}
+
+
 int32_t PIOS_COM_ChangeConfig(uint32_t com_id, enum PIOS_COM_Word_Length word_len, enum PIOS_COM_Parity parity, enum PIOS_COM_StopBits stop_bits, uint32_t baud_rate)
 {
     struct pios_com_dev *com_dev = (struct pios_com_dev *)com_id;
diff --git a/flight/pios/inc/pios_com.h b/flight/pios/inc/pios_com.h
index 3e33775da..439df28c3 100644
--- a/flight/pios/inc/pios_com.h
+++ b/flight/pios/inc/pios_com.h
@@ -84,6 +84,7 @@ struct pios_com_driver {
 /* Public Functions */
 extern int32_t PIOS_COM_Init(uint32_t *com_id, const struct pios_com_driver *driver, uint32_t lower_id, uint8_t *rx_buffer, uint16_t rx_buffer_len, uint8_t *tx_buffer, uint16_t tx_buffer_len);
 extern int32_t PIOS_COM_ChangeBaud(uint32_t com_id, uint32_t baud);
+extern int32_t PIOS_COM_ClearRxBuffer(uint32_t com_id);
 extern int32_t PIOS_COM_ChangeConfig(uint32_t com_id, enum PIOS_COM_Word_Length word_len, enum PIOS_COM_Parity parity, enum PIOS_COM_StopBits stop_bits, uint32_t baud_rate);
 extern int32_t PIOS_COM_SetCtrlLine(uint32_t com_id, uint32_t mask, uint32_t state);
 extern int32_t PIOS_COM_RegisterCtrlLineCallback(uint32_t usart_id, pios_com_callback_ctrl_line ctrl_line_cb, uint32_t context);